<human>: Can you condense the text into a few key points?

Sorry if the formatting is terrible. 

We haven't been seeing each other long but we really seem to be getting on great. He works at a gym I go to 5-6x a week full time and we just started talking from there. We'd occasionally meet up, smoke and just chill and talk rubbish. 

Things happened on a night out where we were both attending and he admitted we liked each other, ect. 
I have previously casually slept with a couple of guys that come into the gym and that I am friends with and see each week. I wasn't interested in any relationship at the time and just wanted to, well, enjoy myself I suppose! H is friends with  the guys I have slept with and I believe one of them mentions he'd slept with me to him. He asked me and I was 100% honest with him and said I had. He didn't seem to mind as he did actually ask me this before we'd started seeing each other. He isn't aware of anyone else that I know of. 

Tonight he text me and asked me how many people and comes across as a little blunt and irritated. Of course I will be honest. But at the same time I want to question why it matters. Does it? Is it relevant how many people I slept with before we became close? I'm a slut for doing this? I am started to regret it a lot and feel bad. 

What do I do, Reddit?
<bot>: Been seeing a guy who works at a gym I go to. Have slept with others guys (who he is friends with from gym) and he is now questioning it more. What do I do? Is it relevant?!??