What's your #? (GMish)

So There's a certain LG whom I know openly likes me xD, and has made it fairly obvious over the past couple of weeks, So here's what I had found out this morning, that her older sister (Whom I'm good friends with whose my age) Was pratically nagged to death last night to give up my phone number to her. I also from what her sister tells me, says its kinda obvious she has a crush on me xD. Now I guess is here's the trickey part, The girl in question is quite nice, both mentally and physically beautiful, we both have alot in common, and talk to her regularly. However I still have feelings for L, and what pretty much is keeping me from jumping on the OMG yay I have a LGF band wagon is the fact that I still have feelings for L whom I havent seen in about a month. Its strange, I dunno, Some advice would be nice. Well anyways talk to you later!