Relationships are ****** up?

My bf decided that he needed some time in our relationship. Due to some trouble we were havin. I understood since we had been going to fast so i gave him time. After 5 days of not talking to each other...he texts me and says that he's ok and that he wants to get back. The thing is that those 5 days were horrible....not only bec he had decided to take a break but bec. i was sick. Also, i think he likes this girl...he even told me that if we werent dating he would go out with her. Also, i dont want him to break my heart for a second time...if he's not into it. Id rather just leave it as is...that way i wont fall in love with him more than i already am. bUT AT the same time i dont want to break up. What should i DO??