I had an early experience that soured me on long term relationships with Thai ladies. I took a day tour with a group that included a Farang and his Thai wife, and she harangued him all day, clearly unhappy with the relationship.
Many experiences since then, I knew a female bar owner who admitted she didn't like boom-boom with her husband, as she was "too old" (42). But, she managed trips back home to Isaan whenever possible, and always came back happy.
And all the ladies with long term Farang boyfriends who come to my condo, get drunk, and then I have to shoo them away like a fly, repeatedly (I don't play with ladies with Farang "boyfriends").