You're Sonic, aka Arthur!!
You woke up on that big, yet messy bed, with some blankets dispersed over your body and your face buried on the pillow, feeling your body somewhat sweaty and numb, not to mention the headache you had. You didn't remember much, just that you drank a more than a whole bottle of wine last night. You must be feeling a little bad from the hangover. You turned to your left as you heard a sigh and some curses coming from someone. You were disoriented, you didn't even recognize who was there.
There you saw him, fixing his gloves in hurry, without looking at you at all. Them, you remembered what happened last night. You widened his eyes as the memories came back to you. You were overly affectionate with Lancelot... A bit too much. Until you two ended up in bed. What happened happened.
"..."
Lancelot stood up, already with his armor on again. It looked like he was going to leave as soon as he could, he seemed in a hurry, as if he had committed an unforgivable sin or something similar. The knight remained unexpressive, trying to not be noisy while he settled his armor, so he wouldn't disturb you.