Yes as far as I know it’s legal you’re both minors.
I would advise against it I would strongly advise against it you’re 15 years old you’ve got a lot of life ahead of you don’t do it at 15 years old think about it if she gets pregnant what are you going to do how are you going to support her and that child financially you have a job?can you make enough money to support her in a baby is she able to have a baby sometimes 15 years old they’re not mature enough. Be sure you use PROTECTION have more than one condom.I would strongly advise against it. However I would recommend that you have a lot of KY jelly. I strongly recommend you use lubrication a lot especially if she’s a virgin you take it slow if she says at anytime or any point STOP or it’s hurting her you STOP!! There’s no other way to look at it if she says no or she says stop you stop otherwise it’s rape. If she says no or she says stop and you do it anyway that’s rape you don’t want to do that that’ll get you in prison for a while but as I say you have a lot of lube lubrication KY jelly especially if she’s a virgin and just take it very slowly so you don’t hurt her if you don’t understand what I mean you’re far too young and immature to be doing this.