Is this a FWB or more?

There's a guy i've known for about 6 weeks now. We met at work, and I didn't see him like that at first, but as I got to know him a bit more, I realised I was attracted to him and I also noticed that he was flirty with me, though didn't know if he was just a flirt in general.
I tried to find excuses to spend time with him out of work and he was always up for meeting and very nice, but I couldn't tell if he was interested. We went out once or twice alone, and once with a mutual friend.
Anyway, I found myself liking him more and more, so one day when we were messaging, I told him i'd like to go on a date with him sometime and he agreed.
We went out and we ended up getting on brilliantly, and kissed quite a lot.
There was a lot of chemistry and sexual tension between us, and the next time we met we slept together.
I told him that I wanted to date him, and he told me that he just wanted to 'take it slowly' as we hadn't known each other that long, so I agreed.
Anyway, we see each other once a week at work, and in between that we've been messaging a lot. Some of the texts are quite explicit, but many are just general how's your day going, making jokes etc.

Anyway, the other night he asked if he wanted to spend the night with him. I did, and I just really enjoyed being there with him, cuddling him and just talking about stuff. I'd really like a relationship, but I don't really know how to go about it.
I know we've not been seeing each other long, but I really like him. The thing is, I have no idea if he is seeing anyone else. I don't think he is, but I noticed there is a girl he's always messaging, and dunno if it's just a friend or something more.


My friend told me to be careful with someone who doesn't want to commit. I do really like him and I would like to call him my boyfriend. Does it sound like he's only looking for one thing. I mean we go out and eat together, talk about other stuff etc. and I always try to help him with things, but I don't know what he's looking for with me.

You've known him 6 weeks, of course he wants to take it slow, he barely knows you really. He might be messing round with other women, I don't know either way but you cant just assume that the man you've known for 6 weeks isn't interested because he doesn't want a committed relationship yet.
He's either not wanting a relationship with the person he hasn't even known for 2 months or it is FWB, honestly you would have had a better idea of which if you didn't sleep together so soon.

To be honest he's clearly said he doesn't want a relationship and also he is meeting another girl, think that clearly says it will never be anything other than a bit of fun and sex.