I'm basically the same age and I would have trouble even wanting to become friends with a 25 year old. Can't imagine dating or marriage or co-parenting with someone with that level of life experience. Make it 19 and it seems like a completely absurd proposition.

But it depends on what you want out of relationships. If you're not looking for an equal partnership, a connection at an emotional and an intellectual level, then maybe what I'm talking about wouldn't deter you.