I've had bad experiences trusting people in real life. I think some folks say don't trust people online because of the lack of eye contact and observable body language. I could be wrong about that.
In a way, this relates to a post of mine a while back. I had asked something like are online "friends" really friends? I'd pretty much already thought Yes, they are, but I wanted feedback from this board's members, many of whom I'd like to consider friends.
I'm a real-life introvert, and I think that shyness also comes into play in online conversation. Case in point, I waited to see what others would post in reply before making my own. I'm like that in conversations and group discussions.
I've certainly felt like I had made enemies at various message boards. There are topics or facets of myself I've leared to avoid at various boards for fear of being made to feel like I'd been excreted by a cow and kicked around a pasture. But I'd like to think I made a few friends online, too.
My wife often expresses the opinion that online is not real. I don't think I buy into that completely. There could be those who have personas that are the polar opposites of their real life selves. It seems to me it would be a tricky thing to do successfully, but not impossible. I doubt I could do it for long.
I, too, feel like I can be more myself online, here at least anyway. I've met my share of judgemental, arrogant, and hateful folk. It's nice to have a place where I can just be me. In real life, I have a tendancy to hide various parts or me depending on who I'm interacting with.
And for the record, Nero only broke my heart once. But, it was a misunderstanding and all was put to rights shortly thereafter.