HEY GUYS, what is it? On what day is Second Grade Valentine's Day? Your help will be appreciated.
You've never had a girlfriend?
Not even like a second grade Valentine?
Nope.
Have you ever kissed a girl?
No.
What about you?
As bhaisahab pointed out, there is no mention of "Valentine's
Day" anywhere in that dialogue. Sometimes, we refer to our boyfriend/girlfriend/partner as our "Valentine" ie the person we love.
As far as a "second grade Valentine" is concerned, I'm going to assume that we're talking about American school grades. Second grade is attended at, I believe, around the age of 6. Even though 6 is too young, of course, to have a proper girlfriend or boyfriend, lots of young kids have a sort of childish crush on a member of the opposite (or same) sex. They might hold hands a lot and have cute conversations about getting married when they're really old (about 19!) It's not a proper relationship in the real romantic sense, but in later years, they might refer to that first special friendship in this way.
"Well, I'm married now of course, with four kids, but I've had my fair share of girlfriends over the years. Sometimes I even wonder what my second grade Valentine, Shelley-Ann Bartram, is doing now. She was so sweet. Long dark pigtails, a freckly nose, a tinkly little laugh. I really thought I was in love! When I was six! Cute, huh?"