I understand your predicament. The problem is that wanting a relationship can sometimes turn a guy off, your parents not withstanding. Just learn to love yourself and tell your mom to stick it, perhaps meet the potential date at the restaurant or wherever.
You're an adult. Move the fuck out.
I can't move out until I finish college.
Let your parents think that you are starting to lean towards being into the same sex and they might settle with allowing you to have a bf. Otherwise just wait until you are out of college and moved out in 4 years and remember that you already waited 23 years.
Bullet in the heads for ya parents! THEY HAVE SERVED THREE PURPOSE LOL
SELFISHLY MOVE OUT!!! From and lots of sex lol
Be well :)