I need advice 😭

So I've been talking to this from quite some months now. For context, I'm 18 and he's 24. Before me, he had a girlfriend of 3 years and a situationship with whom he wanted to marry. In the start he was always used to talk abt them both. He also had 7 online fwbs 💀. But now, he talks less abt them, says to me that he loves me, sends me kisses and all. He says that I haven't had chemistry like you with anyone before and all. We definitely won't get married first cuz of his past and then religion differences as well as age gap. He says I love you, does everything like a boyfriend but knows that we can't be together. If I ask myself do I wanna get in a relationship with him? No. But idk what to do with him. Like some of his texting patterns are sends me good morning, then ghosts me for 8 hours (cuz he's in office) then when he comes back then talks to me. Though earlier he used to text me within those hours as well, but he's not doing so from quite some weeks. He sometimes like videos which are relatable to both of us but doesn't send me 💀😭 he discusses his problems, friends and family things with me as well. But none of his friends know about me. What should I do in such a situation. Also what you people think his intentions are?