WHY IS THIS HAPPENING?!? please help!!

Katie

okay so tomorrow is me and my boyfriends 1 month anniversary!! (which is great, he is super sweet and i like him a lot) but we like had our first makeout sesh like 2 days ago and then like an hour ago and my bottom lip gets HUGE!! i mean i don't have a lot of experience-none actually hahahaha.... but he always like has my bottom lip and i have his top? does that make sense? but anyways...he isn't biting or anything, it's like sucking? like a lip hickey?!? idk if this is normal or not but idk if i like it and how to get my lip to calm the fuck down hahahha

(these are pictures of me normally and then my lip after for comparison)

any help will be GREATLY appreciated!! i love the <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> community so much omg

this is definitely not normal!! i have really thing lips so i don't understand