19 and 25 year old dating
I know i shouldn't care about what other people think but I don't want anybody thinking wrongly of the guy just because he's dating an 18 year old. You grow up so much from the ages 18-25 that no matter how grown up or mature you could be for your age, you just aren't in the same place. Not in a patronizing way or anything (obviously there's nothing wrong with being that age, or a kid lol), that's just... I think every situation and relationship is different but nah, I'm definitely going to be weary of a dude off the bat if he is into 18 year olds.
Seen too many take advantage of younger girls, myself included when I was that age.
I would suggest being friends and getting to know each other before you label it as anything.
In reality it's not about what other people think...
Oh they should be of legal age, so you're good there, but IMO it would probably be better if they were also no longer in high school. I'm 19 and I dated someone 11 years older than me.
At 18, I was very mature for my age and I found dating someone older meant we were near enough on the same level. That being said, there's a good chance that an 18 year old isn't going to be too mature, and while it might not seem like a problem initially, it's probably going to start becoming more and more annoying the longer you spend with her.
Whilst I acknowledge that previously you've had issues with dating younger girls, you shouldn't paint everyone with the same brush. Compound her immaturity with having to hang out with her 18 year-old friends, and I could imagine it would be really difficult to deal with.
At 18 you're still a baby and new to adulting (typically) while at 25 you're at a different stage of life. Of course when I was a Junior and Senior in high school, I was a full time college student at a near by University.
It just seems like youd hit a lot of bumps and you wouldn't have too too much life experience in common. We are still dating and celebrating happy 10 months today actually!