Is it reasonable to have hurt feelings and perhaps choose to move on , if a single widowed friend still chooses to wear a too tight a wedding ring from the previous marriage?

It sounds like..: you have a romantic interest in this widowed friend ... which, of course, is fine. I have found, though, that choosing to continue wearing a wedding ring does not really indicate where the person is emotionally. For some, it suggests continued attachment. For others, a nice memory, but they are ready to move on. In this setting, perhaps he can't bring himself to have it cut off. Be compassionate.

All feelings are: reasonable. It's what we choose to do with them that matters. If a widowed friend keeps the only thing they have left from a person who meant everything to them, it's not an unreasonable thing. It's also not unreasonable for you to be hurt by that. Both sides are legitimate. A relationship counselor could ask you and your friend the right questions to smooth things over. Search for one here on HT