PLEASE HELP! Guy I wanted a relationship with ended up just being friends with benefits. He says I ruined my chance of being with him?

So I have had been friends with "Marco" for over a year. I never thought of him as anything more than a goofy friend, who would hit on me. Over the summer he helped me with an online computer class (for college). He was so patient and kind it made me see a different side of him. He would hit on me and make sexual comments but never acted on them. I wasn't interested. After some time of spend nearly everyday together doing homework watching movies and eating dinner. It eventually turned sexual and I was so repulsed that I had went there with him I would just leave. I told him this would never be anything more than sex and he agreed. Eventually I developed feelings for him. I started to get jealous of his female friends and feel insecure. I told him how I felt but he didn't exactly reciprocate. Eventually told me he kinda likes me to and he said we could work on a relationship. Months went by of us just "working on" getting into a relationship. It was very sexual. I would get tired of waiting for him to come to a decision. He would say he's not sure yet. Now fast forward 6 months he no longer wants to try and be in a relationship and we sill have sex and and he acts like a boyfriend at times with cuddling and spending time together. I feel like I do all the contacting and initiating plans. He rarely reaches out to me. He tells me this is never going to be what I want and I ruined it from the beginning with my jealousy and fighting with him. I've found old messages of him sexting another girl. i can't confirm they slept together. Im at a loss part of me is telling me he cares about me but doesn't want to give in. On the other hand he's showing me how he feels. I feel like he keeps me dangling and I need help and advice please. I know this may sound obvious to other people but its hard to see clearly when you are in this situation. I really love and care about him but I have no idea what to do. PLEASE HELP!!! Thank u
PLEASE HELP! Guy I wanted a relationship with ended up just being friends with benefits. He says I ruined my chance of being with him?
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