Thai ladies keep breaking my heart

I’ve dated a couple of Thai ladies in the last few years and it always ends the same. They end up leaving for some reason. I’m very attracted towards these women because of their attitude as a girlfriend. However, after a year or so, they grow cold on me and they break up with me. I don’t think it’s for financial reasons since I do have a very stable and good paying job. However, I am quite conscious with finances as I don’t want to waste money. Still, I give my gfs all that they need or at least that’s how I feel like. So now I’m thinking maybe it’s me? Maybe something is wrong with my attitude towards these ladies? Need advice.