Ex-colleague. Both left company earlier this year. Worked with him for about 4 years on various projects. Always professional but I knew he was fond of me. Maintained contact outside work but totally platonically (he's married with children and I've been with someone for 12 years). Saw each other in a group a couple of times and went out for lunch once. He drove. In the car when he was dropping me off, he kind of lunged at me and gave me a big hug. I felt very awkward and he'd totally overstepped the mark and he knew he had. Since then, he's text a lot. I responded benignly at first, saying I was busy. More recently, I didn't text back or pick up his calls. I then blocked his number but a voicemail has just come through from him. It says, "if you don't pick up my calls, you know I'm going to come round don't you and you know what that means don't you. You can run but you can't hide". What would you do?