<human>: We met when she was going through a really difficult time in her life (she was going through grief counseling) and arguing with her parents, so she needed a place to stay for a little bit and I let her stay with me for a little while. After this, we grew a lot closer after she opened up to me about her wounds and she's always told me that I've helped so much in the process of her healing that her counselor or family and friends could never do. It's been almost three years since then, and I would say that although she'll never be the same person she was before (before I knew her), she's grown into an incredibly strong and healthy woman. 

In the past 6 or 7 months she's started to date this guy and she's introduced me to him and we've hung out a few times. She's asked me advice about him but she has more relationship experience than I do so I never really know what to say. She still has a special place in my heart and I'm pretty sure I have a special place in her heart too, but recently I've started seeing a guy too and I feel like we both have just drifted apart. If it weren't for us becoming so close during a vulnerable time in her life I feel like we wouldn't really have fallen in the same circle of friends or way of life. We're kind of different in a lot of aspects, but our core values are similar. 

I don't really know what to do? When we talk now it's not really the same as before, I think mostly because she and I would have really deep conversations but now she talks about those things with her bf. I'm also kind of introverted so I can't really keep up with talking a lot to multiple people on a daily basis or else I get really tired. I talk to the guy I'm seeing daily so it kind of leaves me satisfied with the social aspect of my life. 

I'm not sure what to do now.

Can you condense the text into a few key points?
<bot>: My best friend and I are really different but we've gone through a lot together. Lately we've been drifting apart and I don't know what to do.