Was my colleague just being nice or flirting?

So, I currently have covid. Been working from home because of it.

There’s a colleague of mine (who Ive had a crush on for awhile now lol) but who I never really talked to but had to run something by. We ended up having a great conversation online, back and forth. Before the chat ended he said “hey text me if you feel bored during quarantine😂😂” and proceeded to give me his number.. 😱😱😱

I know, we are colleagues. Never mix businesss with pleasure is my motto. I never ever ever do.

But I’m curious… do yall think he was flirting or just being nice here? To give me his number…? 🧐