I totally agree.  I might add that this guy's willingness to put both of these girls into such an awkward situation doesn't seem to speak too well for him...

I agree it may be the best idea to avoid the party. If you do still decide to go and she somehow asks how you met, just say you knew one another online for a while. It's the truth right? I can't see the both of you coexisting in this guy's life for too long but don't feel the need to give away too many details...

Blairbear89, i'm not in High School, I actually 32 yrs. old. and the fact that he invited me to his friend's party is because I just moved to the area and do not know anyone that why I went on the dating (online dating with Match.com) site to look for new friend and I met him. His friend is from my country and he thinks it is a good idea for me to meet with him and he and his wife live really close to me so I can have friend to hang out sometimes. And I don't have to meet her. Or if her showed up I would say the truth that I met him online long time ago.

I work from home also that makes it more harder to find friends.thank you for the advice tho...