I've changed usernames for this and will try to avoid specifics in case someone recognises me from this.
Basically I started a new job a few months ago. I'm a quiet person and often worry about being seen as rude and other people in the office had commented I need to talk to people more.
With this in mind, I had a few chats with this guy who seemed nice and thought he was trying to welcome me to the organisation. He didn't flirt with me or anything and I genuinely thought he was being friendly and welcoming. He gave me his number and said to text him if I ever wanted to chat. I've had people of the opposite sexes' numbers before in workplaces and didn't think much of it.
I texted him and soon he began telling me how pretty I am, how the best thing that happens at work is seeing me and that he knows where I live. He started messaging me every day, like 10-15 messages each day even if I didn't respond. Being the naive idiot I am, I just tried to gently bat away the comments and keep the conversation platonic. I told him in the last few days I don't want want to be messaged daily but now he keeps messaging me even though I'm ignoring him.
I sincerely regret ever giving him my number but I thought as someone who was a lot older than me and senior to me he would be professional (yeah, I know, apparently I've missed the massive outpour of stories in the news over the past year of similar stories women have gone through!) I guess I also trusted him as he has a responsible job and thought he would know better than to make me uncomfortable and borderline harass me.
Am I silly to worry he will escalate his behaviour? I am the kind of person who tries to avoid conflict but just want him to leave me alone. He ramped up his attempts to flirt with me and the volume of messages whilst I was going through a difficult and upsetting situation at work which now, is obviously a big red flag to me. He didn't try to support me through it at all, he just kept talking about my appearance and saying inappropriate stuff.
I now dread going into work and seeing him. I've started using an exit where I have to walk through another company's exit points just so I don't bump into him.