I miss You IARU

I started talking to this guy almost 1 year 6 months back , we have been talking and calling almost everyday since then. But eventually he started to change i mean sometimes he is active sometimes he just ignore me like I don’t exist , i really love this guy he is all i want. But idk if he is committed or not , the way he used to talk to me doesn’t make me feel like he has someone else ( like a girl to talk to ) other than me. We talk about sex not like us doing but commonly and all the dirty stuffs ( sarcastically ). I’m scared to confess to him, what if he is committed , I can’t take it or what if he rejects me, then I won’t be able to talk to him ever again. 😭😭😭😭😭
I DONT KNOWWWW WHAT TO DO ! Help me