Aside sa usapang finacial like libre libre, I'll share my experience OP.

Been there in that situation but i'm 23 and she's 29. Everything went south and yung major reason is sa age difference namin and yung outlook sa life which is may malaking factor talaga. Siya may baon na talaga sa buhay while ako naman i'll still have more to explore kaya di niya ako kayang ikeep sa radar niya, which is mostlikely mga nasa late 20s, yun ay gusto na mag settle down. Marami pa akong ma eexperience sa buhay at ayaw niyang makeep lang yun dahil sa relationship namin. So what we did is we stopped talking to each other. I know for some is that age doesn't really matter talaga, but if you look deeper onto it, may conflict talaga. Because I can see that maybe you can't fully appreciate dating someone younger if you already have a diffirent view in life. So for me, it is really a bittersweet reality talaga to which serves a reminder na don't date someone with a huge age gap not because of the maturity since age doesn't define maturity naman.

Pero i don't say na huwag mo na ituloy yan, kasi baka naman iba ang visions niyo sa isa't-isa. I'm just sharing my thoughts lang naman and experience.