Do you think it's normal for your x-girlfriend to invite you in her room?

Do you think it's normal for your x-girlfriend to invite you in her room?

It happened last night, the night after my baptism. It is so ridiculous that she would invite me. She's not my girlfriend anymore. She sent me a message inviting me to her boarding house and I granted her request. I asked her why, and she said she is just checking me if I am alright. But i know she wanted to say something. We talked nonsense things and she let me enter her room to have some private time with her while waiting our dinner. We talked like we were boyfriend and girlfriend.

I kissed her in her lips and I thought she will refuse but I think she likes it. We kissed not just once that night but a lot, I guess.

Then, this afternoon her best friend tell me something, something I really don't expect. She said that there will be a great possibility that we will be boyfriend and girlfriend again.

I used to love her, but after she broke up with me with her nonsense reason I lose my feelings to her. And now she made it obvious that she want me back to her life.

I don't know what to do...