This is set a couple of days later it's 2 days before the wedding and both Hanna & Caleb are having separate parties with their friends. Like a bachelor/bachelorette on the same night.
Hanna's party
'I have a good idea for a drinking game' Spencer said after her fifth drink 'oh here we go' Aria said rolling her eyes she and her boyfriend Ezra went to high school with Hanna and Spencer and stayed in touch since.
'so first take a shot if you know how the happy couple met' Spencer was slurring a bit but she could handle her drink Hanna on the other hand was crying
'at school duh' Aria replied 'what's wrong Hanna' she said looking over at the blonde who was looking through photos. 'I'm just thinking about Caleb and how perfect he is' 'aww' the other girls said, Hanna remembers the exact conversation she had with Caleb when she met him for the first time.
flash back 8years earlier
Hanna walked up to her locker and noticed a guy stood in front of it he was wearing a beanie and had long hair. 'What's up princess' he said looking at Hanna who was not amused 'the princess would like you to remove your sweaty body of her locker' she replied, he moved away and asked what her name was
'not that it's any of your business but it's Hanna' she said putting her books in her locker and turning to look at him. 'I'm Caleb I recently moved here I was wondering if you'd show me around after all my locker is next to yours' she said showing her his locker.
'wow impressive now get out of my way and absolutely not'. She walked away and Caleb couldn't stop looking at her yes he was checking her out and he was getting a little crush.
end of flashback
present day Caleb's party
'look Toby I don't want things to be awkward ok so try not to upset Spencer' Caleb said handing Toby a beer 'when is Yvonne coming anyway?' He asked.
'she said tomorrow I haven't spoken to her in a couple of days and I don't want to upset Spencer, I promise I won't make things awkward' Toby said he could admit it was strange seeing Spencer after all this time but he was sure he'd be fine.
Back at Hanna's party the girls were still playing the drinking game when things got weird 'you see I know Toby's engaged but does he have to rub it in my face' Spencer was having a drunken rant about Toby
'oh look at me I'm Yvonne' Spencer's attempt at mocking Toby's fiancé made Aria decide to stop the party and go to bed 'come on Spencer you've had enough and your clearly jealous' she said trying to pick Spencer up even Hanna tried to help, the managed to get her to bed but it wasn't over.
'How can you mock Yvonne when you haven't met her?' Hanna asked and she immediately regretted it 'shut up Hanna just because you have the perfect fiancé and I've never thought you and Caleb would last'
hearing Spencer's words made Hanna break down and run to her room 'your going to regret this in the morning Aria said leaving the room, she saw Hanna and said 'it's the drink talking let's just go to bed '
'wait before you go, is she right?' Hanna asked looking at Aria 'no I don't think she really believes it' Aria left the room she didn't want Hanna to know but she saw Caleb kissing another girl a few weeks ago.
end of part 7- just a note I only know it's called bachelorette/bachelor party from watching friends,PLL in the Uk we call them a Hen night (girls) and stag night (guys) so if I'm wrong please correct me