My ex girlfriend wants to "explore"

I'm a 20 year old staright guy that was dating a pansexual girlfriend .My girlfriend just broke up with me. I knew she was pansexual in the beginning and I accepted that she was. We've been dating for 10 months and now she recently moved to another city for university. She told me she has a crush. She says she needs time for personal growth to find who she is as a person and to know more about her sexuality. She says that she needs a break not forever but for now so she can explore her sexuality and see what it is like with other genders and people (she is talling about being eith other people and about sex but she is in denial about wanting to see how see is with other genders and people). She says that by June she would be finish exploring but she isnt sure if she will be finish exploring. I asked her if I'm her first choice if she could choose .She said that she doesnt know and that is why she needs to explore and to know about herself. The twist to the break up is that she still loves me and cares about me and wants to be with me and thinks we could work it out in June when she is done exploring and if she still loves me then . I know I shouldnt wait for her but I do really love her. I just want the best for her and she says she really needs to do this. I told her that if she doesnt want us to date again in June then she would have to be honest about everything she has done since our breakup . I just want to know what I should do know .It's like.... I might be her backup. Pls help