Last night after work I stopped of at a local workout supplement shop. I've been working up the courage for weeks to talk to this HB10 that works there. Finally last night I did it. I opened fine with a "you used to work out at..." line and it generated great conversation from there.

I got her name but with further investigating (i.e. Facebook) I found out she has a boyfriend. This dudes a massive body builder (she does competitions also). It also looks like they've been dating for a while.

I need opinions on whether I should try and use a boyfriend destroyer or just let this slide, keeping good conversation but nothing more.

Not sure how to go about this and I really have no idea how to use a boyfriend destroyer. I don't even know what's a good boyfriend destroyer.

Advice would be appreciated!