Is this an acceptable relationship?

Just make sure you give her parents a proper handshake.

Um duh

You're the only one I see here who thinks its a problem OP

a good relationship does not depend on age but attitude

It’s literally less than a year. I had a bf who was 18 when I was 15, it’s just two teenagers in a relationship

she is the legal age of consent so i see no problem

Completely normal

Whats the problem? Best stop pissing around because in 12 and a half months I'll have my child calling you dadda, your GF calling me daddy, and you left paying the god dam child support payments.