Agree with Scarlett. Being jealous and insecure isn't a good recipe for keeping the girl, whether you love her yet or not. I think her lie to you is pretty irrelevant to what you're trying to ask, but only you can answer your own question. It's not just how your girlfriend looks. It's her over-all kindness, personality and warmth which should count. If you display too much jealousy, you'll probably lose her anyway, so take it slowly, and see what develops. When you fall in love, you'll know about it and won't need to ask!