So here's the story:
Ive been best friends with this girl for about 4 years. Weve had the closest most fun relationship ever and everyone had already thought we were dating. We were so close it felt like she was in more of a relationship with me...but she was seeing another guy who was always off at school and only saw her on weekends. I really liked her so I wasnt able to handle everything and being as close. So I stopped talking to her for a week here and there which she hated. Her bf hated me and broke up with her cuz he saw how close we were. Right after that she tried giving things a chance with me for a couple weeks but then wasnt over him so she tried getting back with him but in order to make things work with him she didnt talk to me for three months. She ended up getting sick of trying to make things work with him and wanting me back in her life so she ended things with him. Then to my surprise she came after me like a bat out of hell and wanted things to progress with me.
At first i didnt believe her and tried to keep my distance but then we started getting the butterfly feeling for like a week so that kicked us off. After about a month of "seeing" each other she asked me to be her bf and now we have officially been together for about 2 months now almost. During these 3 months though she has been so back and forth about acting relationshippy and about being comfortable being physical. Shes also really concerned that she absolutely needs the butterfly/excited feeling or she wont be happy and it wont work for her. On the plus side we are super attached to each other and are together all the time and I usually fall asleep with her at her place. She had been ok with the physical stuff for the first half of this but it seems to have dropped significantly with things only happening maybe once a week if that...
Another issue for the last three month is that the ex bf that she had all those feelings with has been still talking to her. She has told me and him that she has no desire to be with him again. She tried being friendly but he still sends her msgs about how much he misses her and that she should be with him and how much he obviously doesnt like me with her. Finally the other night i msged him and told him off because he called her a bitch for backing off from him and then she sent him an email saying she didnt want to try and be friends now because of that.
I do notice however that when they dont talk she does tend to act a little more relationshippy towards me. Although she still says she gets that nervous feeling because its not making her all butterfly like and excited. She does however like me as a bf and said shed be upset if we werent. Other than those things everything else between us is there and we have the greatest most fun relationship ever. All that other stuff is holding her back from the intimate/affectionate/relationship part though. I feel like she needs to not talk to the ex for a while so she can heal from that in order to move on. I know that has to happen on its own and she needs to develop the feelings for me on her own. She also has said that alot of the things we do together or have said to each other relationship wise remind her of her past and it makes it weird for her, like sleeping out in her living room together where they used to sleep for example. She said it might make things easier for her if we were able to sleep at my place...but unfortunately i havent been able to move out of my parents yet. Shes in her late 20's im in my mid 20's.
Im worried that soon she will get frustrated and want to try going back to being just friends...which i wouldnt be able to handle. I told her things like this take time because of how she was used to being with me and everything that had happened. She also compares things to how she felt in the beginning of her other relationships and apparently its not nearly the same.
My question is what should be done about all this so that it works out with her not going back and forth anymore about us/me and has the excited feeling shes been wanting. Sometimes shes ok with acting relationshippy and sometimes she isnt. Most of the time it seems hard for her to adjust to it. I just dont understand because at times she has been able to be physical/intimate/relationshippy with me. Is this something that will just take time and patience since everything else is there? What should she do/not do? What should i do/not do?