Friends with benefits

Ok so I have FWB and it's been happen since February but I do not know if I have feels or just that I love the sex we have. He got out of 3 year relationship almost about to get married but his girlfriend dumped him for another guy and now pego with the another guy baby. He said he doesn't want a relationship but neither do I but now that I been with him for almost 3 times a week I want to be something more but I don't want to lose him if he says no oh and his army and moving soon what should I do ? Should I not text him and move on or be there until he leaves in May? I'm 20 and his 23. Plz help