Alright so tauruses any idea what to do here?

I have this......aquaintance I met a year ago through my gem friend over the phone (we did 3 ways a lot haha) my gem friend and he wanted to hang out seeing as though it's been a long time. But he had no where to stay for the week, the gemini's was 17 so out of the question for her house. I was 19 and my cap mom and I are cool so we let him crash for the week, he seemed like a nice guy and was a good house guest, well except for his stomach ha.

When he left he had a bad habit of callin me too often and too late at night, or morning to be correct, And would talk for hours. We didn't talk THAT much when he stayed so there's not much for to talk about over the phone, I would have to cut him off and hang up to get sleep. He stopped for half a yr. Then just started up again out of the blue.

He doesn't know when to stop, and I know I can be blunt and mean, I don't want to hurt him. But Idk how much longer i can spare his feelings.

So any clue why he keeps doing it?

I'm a Sagittarius by the way.