Should I message him

So I recently started messaging a guy from work (I have just moved away to start studying) we were sending cheeky texts and he asked for a pic, we nearly hooked up at work but got freaked out so we didn’t. I sent him a pic and now he isn’t messaging. Did he just want one thing or am I over thinking it? I know I have moved away and we are not a couple should I just forget about it?