HELP! I need relationship advice.

So, I’ve been with the same girl for almost 2 years. At first, everything was perfect. We took our time with getting physical and for awhile we couldn’t keep our hands off eachother. We moved in together about 4 months ago and everything was great then too. But then, we started getting physical less and less. Now, she has no interest in me like that. She’s been going through a lot lately and was actually hospitalized around Christmas time for self harming. She wants to get better. She told me that she still loves me and wants to spend her life with me and I feel the same way. She decided that she wasn’t in a good place to be in a relationship anymore and that we should take a break to figure everything out. I understand that and I supported her decision. But, she opened up to me about being worried that she might cheat on me. She said that she’s been wondering what it’s like to be with other people physically. She said she doesn’t want to get close to anyone else. But we are both each others first. She said she wants to go out and be spontaneous. I don’t know what to think about all of that. Thinking about her with anyone else breaks my heart. We’re on a break right now but, she still looks at me how she did when we first got together. She says that she loves me and we act just like we did when we were together. Only, we don’t kiss or have any kind of intimacy. I don’t know what to do. I feel so lost. She thinks she could be bipolar because of how she’s been feeling. She took online screening tests and they all came back positive. I just don’t know what’s happened to us. Please, anyone, if you could give me any advice, it would be greatly appreciated.