Is he a perv or just weird?

Hmmmmm Id say he is totally disrespecting YOU as his son! Anyone girl u may like and r dating should NOT have to deal with the dad coming on to them. NOW it may be really tough NOT to look at that big when they r right in front of you! That part might me a little natural. BUT accidnetally bumping into her and things like that r disrespecting you as well as this girl. if u really like her and want a future with her- STAND up to your dad and tell him to cut the crap! I had this happen with an ex husband- the father really came on strong and hit on me every single time I was alone in a room with him! I finally ended up telling my mother in law because he kept coming by the house when he knew my hubby- his son- was at work! Its uncomfortable and totally disrespectful! Your 18 now- stand tall and tell him to cut the crap! Definetely stop bring her around him before he scares her off! Good luck to u