How do I make him interested again?

Hello guys so there is guy that I have been with in a no strings attached relationship but now I feel like strings have started to attach and I don't want to let him go. What I see he is that kind of guy who flirts with other girls but just keeps coming back to me I never show him that it hurts me but it hurts a lot and he's always showing interest that he likes me he introduced me to his friends and family and he tells me everything and I even allowed him to get close to my friend one thing about him he's not consistent it's just that one time he says he loves me like crazy and how he wants a future with me and the next time he says he can't wait to meet my boyfriend and whenever I talk on the phone with a guy he snatches my phone away it's like he always wants me to be around and he and he just recently told me that he has started to fall for my friend the fact that he sounded so sure and not inconsistent like how he always with me that hurts me but he keeps calling me to meet him and he just says he wants to see me and he keeps telling me how he wants my friend. I know I sound ridiculous but I really miss the old me who was always hard on him I feel like he's being this way because like I lost my worth to him and I want to show him what he's missing he always keeps coming back whenever I do not talk to him for days and I want him to be really in deep in love with me
How do I make him interested again?
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