As many here have said, age shouldn't be a problem.

First, we should not have age discrimination

Second, according to gov't statistics, women live several years longer than men on average, and thus at the end, you two may die around the same time.

Third, I especially agree with a few members here that the feeling is more important. I myself have 2 gf previously who are older than me.

to love someone should represent loving everything about her/him, including appearance, age, etc. Therefore, if your lover cares about what others think, you should ask yourself how deep her love is.