3 times in the space of an hour and a half, unless necessary b/c of changing plans, being tied up in traffic, etc. is too much.
Any guy worth his salt would've been cool with you not being comfortable with having him over just yet. Methinks he's not much of a gentleman.
If you have warning signs this early, you should listen to them. Finally at the age of 23 i've learned to trust my gut more. Obviously your gut is telling you something.
Good luck
