I had a first date 3 weeks ago. Went really well and arranged a second date about a week and a half after. During this time he was sending texts saying he misses me etc which was a bit too much after one date but I gave the benefit of thr doubt however when having date number 2 for me the chemistry had gone and after the date I explained I wasn't feeling it and wanted to call things off. This was last week. He's now messaging asking if we can retry and it's making me uncomfortable. Is it ok just to block him? I find his messaging too much. I've met twice and spent only a couple of hours in his company and I feel I've tried to be nice.