Briefly, evening class about 5 or so years ago. Exchanging texts with tutor for last couple of years. Recently we have been texting daily but just for mutual support, absolutely no lust involved or anything like that. We have met once for a coffee. He does text me to say goodnight, and yesterday had to go to hospital to have a breast lump investigated and he was texting me throughout the afternoon. He's thankfully made it quite clear he's not looking for extra-marital anything (well in me at least!) We're both married. Is this so wrong?