(Y/D) is in heat while the Autobots and their new human allies are preparing to raid KSI. Cade and Crosshairs are out, and you've started your heat cycle. Bumblebee and Hound find out, and Hound insists you tell Crosshairs how you feel. Cade has the others join him while Crosshairs is left behind. He discovers you in your holoform, trying to relieve the pain from your heat. He takes this as an opportunity to show you he loves you.
Warning; Contains sexual content.

Crosshairs POV
I'm not pleased we're stopping halfway on our trip to Chicago. Strangely it's not just the humans who want to stop. As (Y/D) walks by me, I can smell she's starting her heat cycle. I see why she agrees with the humans. She'll be ok tonight, but tomorrow is going to be rough.

Cade and Hound already found ways to use the junk here, and I'm already selected to be Cade's ride tomorrow to the hardware store; great. I tried to get out of it, but he had a logical answer for every reason why we shouldn't go to the town. Of course, he found clothes and oddly even a wig to disguise himself. I'd rather be with (Y/D) tomorrow and every day. Even if I make a fool of myself, I'm barely able to talk to (Y/D) without stuttering, which makes her laugh — or maybe it's my red faceplate from blushing.

The Next Morning

(Y/D) POV
We made it to our halfway point to KSI's Chicago headquarters before stopping for a few days at an abandoned house. Oddly this place has tons of supplies for Cade and Hound to invent something. They likely are looking to make something to help us, but what could they invent?

I wake up feeling pain down there.
Oh, frag, it's hard enough for us to deal with this, but while I'm a mission and in hiding? Great.
Cade and Crosshairs already left to do something. I discover Shane and Tessa are in the house. Thankfully they're just cuddling, but this makes the pain of my heat worse. I imagine cuddling with Crosshairs.

Hound asks Bee and me to help him. He wants me to use the blow torch.
"So, when are you going to tell him?" Hound asks.
"What?" I ask, acting like I have no idea what he's talking about.
"Oh, come on (Y/D), you know we can tell you're in heat. You're going to need Crosshairs' help."
"Say anything to him, Drift or the humans, and I'll meet your intake off!" I threaten as I move the torch slowly towards Hound's intake. I catch Bumblebee running away in the background. At least Hound stopped talking.
As soon as we finish, I activate my holoform and go to a bedroom upstairs, glad Shane and Tessa left.

I close the door, strip all my clothes off, and try to find something to act like a spik. Fuck it, my fingers will do. I lay on the bed and try to relieve the pain.

Crosshairs POV

(Y/D) has been too focused on making sure we aren't followed or discovered that I don't think she realized she's starting her heat. I feel bad it's not a secret. I know Bee can be disgusting to anybot who's in heat. She's going to need help with the pain, and maybe it's my chance to tell her how I feel about her.

Cade POV
Something is up with Crosshairs, and I've seen (Y/D) acting of the past twenty-four hours. I'm not going to ask, but I think one of them or they're both feeling horny. We're leaving tomorrow morning. I'll get the others to leave so Crosshairs and (Y/D) can be alone.

I tell the others to come with me. Tessa wasn't pleased, and Bee asks why.
"Cause most of you are dirty as shit; let's go!"
Drift would leave the two alone, but it's better Crosshairs and (Y/D) know they are alone, with no chances of anybot interfering.

Crosshairs POV
Should I be embarrassed Cade got the idea or happy? I see (Y/D)'s bipedal mode by the house. She must be in one of the bedrooms. I walk up the stairs and hear weird noises from one of the bedrooms. Even though I know she's in heat, I worry (Y/D) may also be sick. I rush to open the door.

(Y/D)'s overpowering sex hormones bomb hits me before I open the door completely. I am greeted by the vision of (Y/D)'s nude body. Her (body shape) is just perfect.
"What are you doing here?!" (Y/D) yells, "Get out!"
Now's my chance to show (Y/D) I love her — but I'm risking her being furious at me. I quickly take my clothes off anyway and get on the bed, pushing (Y/D) down in a laying down position, making her blush.
"You don't listen, do you?" (Y/D) asks, smiling.
Instead of answering her, I passionately kiss her. (Y/D) moans enjoying the kiss.
"Please, help me," (Y/D) begs, though she's mumbling, clearly embarrassed. I smile, hoping this means she now knows I love her. (Y/D) wouldn't let any mech frag her, even though the pain we deal with during a heat cycle is a glitch.

(Y/D) POV
I'm done with the pain, but I'd want this even if I wasn't dealing with this fragging heal cycle. I just don't know how to tell Crosshairs I love him. Something tells me this is the way he's telling me he loves me as he kisses various places on my body before he puts his fingers in my valve, feeling how wet I am. I grab his spike and rub it around my valve. This helps a little.
"Impatient, are we?" Crosshairs smiles before removing my hand from his spike in pushing it into my valve. I forgot about the first-time pain, though I didn't think I'd feel it with the pain of my heat cycle.
Crosshairs kisses me as he waits for the pain to fade before thrusting slowly. Even slow is easing the pain. He smiles at my moans of pleasure.
"F-faster," I beg once I feel adjusted to his spike in my valve. Crosshairs smiles and picks up speed.
Yes, fuck me, Crosshairs.

"Crosshairs," I moan.
He smiles and kisses me before pulling out and laying next to me, pulling me close to him.
"Better?" He pants before kissing me again.
"Yes," I reply after our kiss.
I grab the sheet and cover us, knowing one of the others will walk in the room, though it's likely not going to hide the fact we fragged, knowing we're going to end up falling asleep.