What’s your experience of dating an older co-worker?

I am 31F and have fancied my coworker 48M from afar for the last two years. I never thought the attraction was mutual, more like flirty-banter, so I haven’t attempted to pursue it, it’s been in my head up until this point.

We just got back from a 5-day interstate work trip, with a group of 15.

By the second day, I could sense that maybe he is equally interested in me, but again I didn’t think much of it. When we were at after-hour group dinners or socialising at the bar, we always found a way to be chatting away from others, and having a good laugh. Small physical touch started to appear but nothing extreme

We are from the same city, but he was on a later flight. At the airport on the way home he offered to organise me food whilst I sat down. Once I got home, I texted him to thank him as I forgot to when saying bye.

His response was:

“No probs. When can we get a proper meal? Hey good work this week. You did a great job. I won't expense it I can't be fucked it's too hard the only thing I'll expense is my hotel expenses

I'm finally home and in bed now.

I'm so tired. See you Monday”

I’m taking it as he wants to take me out to dinner as he is romantically interested in me. I’m worried he just wants to get in my pants, I’m not really into the whole casual thing.

We have great chemistry, a lot in common and our values align really well.

Should I be up front with him about?