So I've been friends with a girl for 2 years now and never felt anything but lately she came on a trip with me to help with a project I was doing. Since then I've started to really like her for some reason. My first worry is if it's even worth trying anything since it could ruin the friendship. We don't hang out as much anymore but she buys me gifts now and then and she took me for lunch for my birthday. When I said I'll take her out for a Christmas dinner as a thank you she said she'd love to and then talked about how she's excited to give me my Christmas gift. I also noticed its been a long time since she did anything to friendzone me like call me her best friend or anything (I think she stopped doing this when she broke up with her boyfriend too). She sometimes acts like she likes me (sometimes she pretends to be into something she's obviously not just because I am) but lately after a bad experience she had she's done nothing but go out and drink and she barely response to me or any of our friends when we try to contact her. That doesn't mean i don't hang out with her anymore she just doesn't put in the effort to talk to me online, but she doesn't with anyone else either so its not like its just to me. She's shows some of the basic signals like smiling a lot, dressing up nice around me, laughing at all my bad jokes and today we did have a great text conversation but she took ages to reply. She definitely goes out of her way to continue being friends with me and do things with me but does she just really like me as a friend or is there something there? How should I approach this situation?