Based on the roleplay with Emo_girl3365

One night, you couldn't  sleep when smokescreen came inside your room and sat on the bed.

You: Smokey? I thought you're recharging.
Smokescreen:  I can't. Got too much on my mind now.
You: What's that?
Smokescreen:  nothing important
You: *leaned onto smokescreen's shoulder* I was scared about what could've happened to you when the cons kidnapped you and made you as an apexchange object for the omega keys.
Smokescreen;  me too...

Out of the blue, you and smokescreen kiss. During the kiss, you were about to stick your tongue inside smokescreen's mouth when he suddenly pulled away scared.

You: What's wrong?
Smokescreen:  I don't want to do this..
You: I understand,  let's get some sleep.

You were deeply asleep but for smokescreen,  his eyes are wide open in shock.