What does this guy want from me knowing I’ve got a boyfriend?

I used to be friends with benefits with this guy for a year. At some point I asked him where he saw us going and he didn’t seemed very keen taking things further, instead said he was working on his career. He’s a professional pianist, travels a lot for work so I understand it can sometimes be difficult to be in a relationship. He went on tour and eventually we fell out of touch. During that time, I met someone and now we’re dating. At some point we got back in touch and we stayed just friends. We text regularly and he calls me. As 2 friends should. However, recently he confessed he can’t get me out of his head. He’s met with other girls but they’re not as interesting as me. He really enjoys talking to me and misses us. I asked him why he didn’t say this at the time and he replied that he was shy and too focused on his career at the time.
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I meant - At some point me and the other guy got back in touch
What does this guy want from me knowing I’ve got a boyfriend?
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