Girl Problems.. Help me?

This girl that I really am into txt me and said "You love me!" and i said "I do love yaaa." she said what she said playing around.... I did too she replied "Really?" I really like this girl a lot but I don't love her... so I don't know what to say.. I don't wanna rant on and on how i feel about her so I can just chase her away but I don't wanna lie and say yes.. I'm so afraid I'll say that wrong thing. Help?