What do I do to fix something I don’t want to be awkward?

[Anonymous]

There is a guy my fiancé works with & I just met him this week when we were volunteering together. I said something that offended him & he said he doesn’t like that I said that towards him. In that moment I apologized & said I didn’t mean to offend him. He left as he was upset so I gave him some space. After about an hour I went over to help him & the rest of the day when we would talk he kept abnormally mentioning my fiancé. & it felt weird on my side he seemed like he was trying to be cautious around me but acted like nothing happened.
What do I do? I already apologized is there any way to fix it, I don’t want to make it awkward as my fiancé works with him? Is he over it?

[Guffrus]

You shouldn't give a shit, this is his problem now.

[spartan55]

What did you say to offend him?

[Asker]

We were just joking around and he made a joke that I seemed nice at first but now he knows me a little more, he doesn’t think that anymore. & I said I wasn’t mean he’s just being sensitive.

[spartan55]

Yeah, you still aren't saying what you said to him that he found offensive? Very curious why you won't say?

[Asker]

That I called him sensitive

[spartan55]

That's not it. Why did you call him sensitive? What did you say to him?

[Asker]

He was making a joke that I seemed nice at first when we met & I just said I wasn’t mean he’s just being sensitive

[spartan55]

I'm sorry, but I'm having a real tough time buying this. Most men are not that easily offended. I have never witnessed or heard of any dude being that upset about something like that.