So I have a situation and I have questions for the guys here..

So a couple of days ago I had a cable guy come round to fit a new wifi hub. So we got chatting and i asked about his tattoos and I showed him mine well the ones on my arm. Before he left he said if I had any more problems I have his mobile number. My tv was playing up but he thought he'd fixed it. I asked his name and told him mine, then he left. Ten minutes later my tv was freezing up so I called him and he came back round. I apologised for being a pain and he cracked a joke about he could say its because im a woman then he teased that he's only joking. Anyway he fit a new cable then left. An hour later he text me to see if the tv was still ok. He reminded me that I have his number. I thanked him by text and he put back happy to help 😊. I wondered if hes just doing his job or is he flirting with me. So i decided to text him and see. I just offered him a coffee/ tea if hes in the area if he texts me to see if i'm in. I put no pressure just if you'd like to and tc m8 at the end. Am I being too forward and giving the wrong impression? Or does that sound ok? What would you think if a woman text you that? I'm just trying to be friendly, but I admit yes I did like him. He hasn't replied yet it says not delivered yet. Its his work phone so its probably off over the weekend. I have social anxiety so now I'm stressing that I did the wrong thing.. I hope not lol.