I love the name
Valentina. It's beautiful. For a boy, I don't really think using
Valentine is a good idea - too
Valentine's Day, and can also be feminine, so both of these together make it a particularly teasable name. I still like it though. And I like it better for a boy than a girl. I really like
Valentin, though. It's definitely not feminine (and neither is
Valentino, but I don't like that).
I like the nickname
Val for all the names. And maybe
Tina for
Valentina. Because it's really too long for everyday use. And it's long enough without a middle name, too, so if there is one it should be short (no
Valentina Evangeline Alexandra). Something like
Valentina Rose, maybe. Though that's too frilly and pink.