I'll be 70 in the Spring. My wife just turned 51. We have been married 10 years. We live in east Issan on 4 rai and we built a nice 4 bedroom, 3 bathroom and 2 kitchen house 5 years ago. All of it purchased by me. My wife had 4 kids before I met her. I paid 50,000 baht to her wonderful parents on the wedding day. This money just basically paid for the wedding. As you may have guessed, the family is dirt poor.
My wife's parents both passed in the last 3 years, both at 70. We miss them very much.
My wife's invalid, wheelchair bound, 50 year old sister and her 16 year old son, my wife's 24 year old son, 21 year old daughter, fiancée & grandson and 17 year old son all live with us. It takes all of us to run the farm that we started from scratch. One day it will be theirs.
My advice to you young man, is to take your time. There is no need to marry so quickly, you have barely started living. It sounds like this could be your first love, which is easy to do over here.
If she loves you, she will wait. As noted above, you do not just marry her, you marry the whole family. Trust me, you need lots of money. At 22 and recently graduated, I'm sure that's not the case with you unless your folks are prepared to pony up to your every whim.
Get a grip, do your research on relationships in Thailand, THERE IS NO RUSH.