It could be a mixture of things, you know.
Not only is the age gap quite a big one, she is also quite young.
It may simply be that she is ready for the relationship to be over. You need to take this on board, because it can & does happen a lot ~ especially for young people, I think.
If you were to read all the posts on here, you would see just how many people have been hurt, because relationships have become one-sided. Very often the hurt party is told by the other person that they still love them, but that it is over because ...
... And lots of different reasons are given.
If she loves you, then other people's banter shouldn't come into it. If other people's ideas do come into it, then maybe she isn't actually in love with you ~ or else is too young to cope with it.
If you need to be sure, ask to meet her for a chat ~ just to be sure of exactly what is going on.
Take care ~ I hope that it will work out for you.
And remember, though you are older than her, you are still quite young, so if this doesn't work out, you could soon find someone who really is right for you.
Though it might really hurt to lose this girl, who you love, if she doesn't feel the same, you may be better off, long-term ~ a one-sided relationship would not be good for you.
Good luck.
