Hi! So in case you can't tell, I've started with the more obscure characters in the series and will now start working my way through the more prominent ones. Hope you enjoy :-)

Paddy

Paddy Doyle had never been so happy as the day his daughter struck up a friendship with Jane Rizzoli. Detective Rizzoli was brash, sarcastic and formidable, despite her slender frame, and she was also extremely protective of her friends and family; none more so than a certain Maura Isles. Paddy watched his daughter as often as he could; he kept track of her events and achievements so that he could see her receive the awards she so richly deserved, but he was grateful that Jane was there to protect Maura the times he couldn't be. His surveillance of Maura's life revealed more than just her awards and achievements though. Paddy knew when Jane started appearing more and more in Maura's life, he knew when Angela Rizzoli moved into Maura's guest house, he even knew about Tommy's baby and how it seemed to link their lives even further. Suddenly they weren't just talking about what they would do when they got old, but what they wanted to teach TJ to do as he grew. Paddy sat in his car outside Maura's house, watching through the window as Jane reached out to touch Maura's arm and she threw her head back in laughter, holding onto Jane for support. Paddy Doyle may be a monster and a murderer, but he knew love when he saw it. He saw it when he fell in love with Hope, and he saw it now. He only hoped that Maura's love would last a lifetime.

Cavanaugh

Sean Cavanaugh knew that, to be a good Lieutenant, one must know the ins and outs of the various police officers under him. And Sean prided himself on being a very good lieutenant. He was aware of Frost's difficulty with death, his amazing ability with computers and even about his ex-fiance, long before Frost's partner was made aware of it. Sean and Vince Korsak were old buddies, but even so, Sean had a mental list of the things that made Korsak up: his three ex-wives and the circumstances behind each divorce, his stepson, even his initial feelings towards Frost. What Sean had a harder time calculating was a certain Jane Rizzoli. He knew all about Jane's family of course: her youngest brother, Tommy, the ex-con, the middle sibling Frankie, who looked up to Jane Rizzoli, and the circumstances surrounding her parents' divorce. He was of course, also very familiar with Angela Rizzoli seeing as how he was currently romantically involved with her. But Rizzoli herself... she posed a bit of a mystery to him at first. He knew about her failed relationship attempts: Gabriel Dean and Casey Jones being chief among them, but that wasn't what intrigued him about her. Rizzoli had never really committed to those relationships, but there was someone she appeared deeply committed to. It was at this point that Sean made the decision to learn more about Dr Isles. He wanted to know just how involved she was in his best detective's life.

Hope

Dr Hope Martin knew that she had never treated her eldest child the way she deserved to be treated. Her initial reasoning for that was good: she had simply never known that she was alive, let alone what an amazing woman she had turned out to be. However after that... she really had no good reason. Yes, Maura reminded her of Paddy, of a time when she felt so happy and in love that it physically pained her to recall it now, but that wasn't it. It was that Maura never asked for anything, except for what Hope found it hardest to give: love. Acceptance. Understanding. Hope found herself enthralled by her daughter, under a spell that she was sure Maura was never even aware she was casting, and it scared Hope a little bit. As odd as it sounded, it scared her to fall in love with her own child. Oh, she loved Cailin, as much as any mother can love her child, but Cailin's birth and life was always marred by Maura's absence. Every achievement of Cailin's... walking, talking, riding a bike... reminded Hope that she would never see Maura do the same things. So when Maura so suddenly appeared in her life; a sweet, selfless, beautiful woman, intent on causing Hope the least pain possible, Hope reacted the only way she knew how: she fought back. She didn't thank Maura when she donated a kidney to save Cailin's life... she wanted to, but she was scared of what accepting Maura into her life might do to the carefully constructed walls she had built since her daughter's believed death.

That's why Hope was so glad that Maura had Jane. Hope may have only been in Maura's life for a very brief period of time, but she could instantly tell how much her daughter meant to Jane, and vice versa. When Hope saw Jane, she always felt as though she was being sized up and found lacking in the dark gaze.

Dr Hope Martin had had secret wishes for her first child the moment she found out she was pregnant. She hoped that she'd grow up to be intelligent and beautiful, and she hoped that her daughter would find someone that loved her as much as she deserved. Hope smiled to herself at the realization that all three of her wishes had come true.

Tommy

Tommy Rizzoli was the black sheep of the family. He always had been and for a long time, he revelled in his individuality. Let Jane and Frankie be the good kids of the family; he didn't have a problem with them joining the police force or having high aspirations, as long as they didn't ruin his fun. And it was fun. He performed break and enters, ruthlessly taking from families their prized possessions so that he could sell it to buy alcohol, he tagged occasionally, and, of course, he drove under the influence. None of it bothered him at first... the thrill of it all far outweighed the risk of getting caught in his own mind. But when he hit Father Crowley while driving under the influence yet again, it seemed to him as though a switch had been flicked in his brain, and he had to consider if this was really the way he wanted to live his life. The answer was a resounding 'no'. Frankie had always been more obvious in his hero-worship of their older sister, but Tommy looked up to her as well. And when the jail doors slammed on him, locking him away, he made the decision that one day, his sister would look at him with pride shining in her eyes.

When Tommy got out of prison, it took him a while to get his life back on track, but it was made easier by Jane's friend, Maura Isles. She was beautiful, intelligent, and Tommy found himself completely entranced by her. She was generous and kind, and she seemed to have no problem helping Tommy out, but Jane was very protective of her, refusing to let her co-sign anything. In a way, Tommy was grateful for his sister's interference: he would never be able to fully prove himself if he was constantly relying on someone else to pick up the slack, but he thanked Maura profusely anyway. And when he felt that her interactions with him were a little bit more than friendly... well, he followed up on it. He was only human after all, and Maura Isles was an extremely attractive woman. His sister's reaction was unexpected however. Tommy had dated friends of Jane's in the past; she had never been really happy about it but she left him to it. When he started making the moves on Maura though, she flat out told him to back off, and that struck Tommy as being strange.

Did he think Jane and Maura were in a relationship? No. Not yet. But it was coming someday very soon.

Frost

Jane wasn't the type to open up easily: Frost picked that right from the beginning. She didn't want to be seen as weak or emotional; basically she didn't want anyone thinking that just because she was a woman, that that somehow indicated that she was inferior. He had butted heads with Korsak right from the beginning because of Jane's need to be always seen as strong and dependable. Frost had never really understood Korsak's attitude; in fact, at first, he thought Vince to be a bit of an asshole. But as they continued to work together, Frost began to understand. Korsak was upset with Jane, and took it out on Frost.

Jane was an incredibly strong woman, that much too was quite obvious right from the beginning. No matter the case, she stood straight and tall, never emotional, never bowing to pressure. Jane was a fortress, her walls built up high against the outside wall. That's why Frost could never understand the way she looked when Maura was around. When Maura was around, there was a light in Jane's eyes, and her whole body seemed to relax just a little bit. She was still her same abrupt, sarcastic, over the top self, but her eyes softened just a little bit when she looked at Maura. Frost made the mistake once of calling a reddish-brown stain blood, and Maura had looked up, slight panic in her eyes at the thought of labelling the stain without definitive proof. Before she could say a word, however, Jane tapped Frost on the arm. "We do not know that it is blood yet, detective. Please refer to it in the correct terminology." Maura smiled at Jane then, and Jane had returned the grin, their gazes lingering just a second or two too long to be considered merely friendly.

Were they together? If Frost was to be perfectly honest, he'd have to say that no, he didn't think they were. But he knew in his detective's gut, that that would most likely change very soon.