He loves “chilling”
Also known as preferring to relax on the sofa (read: Have sex with you on the sofa) than go to the effort of a night out.
He has no idea where you work
Because why waste time with conversation when he could be getting it on with you.
He hasn’t accepted your friend request on Facebook
Despite being online every time you stalk his account.
He booty calls you
That drunk 1am post-pub call is a pretty classic giveaway sign that a man is in it for the sex.
He loves doggy style
The more he’s using you for sex, the less eye contact he’s going to want to have.