<human>: Can you provide a brief overview of the text?

Hello there!

     I hope this is the right place to post. So I would really appreciate your thoughts and input on what occurred. So I've been with my bf for almost two years now. I've met his family many times. They seem to like me. They are all Iranian. I am Latina. My boyfriend is 22 and so am I.
     My sister is getting married and my mother asked me to see if my boyfriend wanted to invite his parents. Not so long ago I went over to his parents house and they asked me about my sister getting married, but not about going. I assume so they wouldn't seem pushy or they just didn't care to go I'm not sure. I'm not sure if that's relevant. So I ask my boyfriend to see if he believes his parents would want to go. He tells me sure he'll ask, but then says he's not sure about his mom because she's conservative. I ask why but doesn't respond the two times I ask he just proceeds to say that he'll ask.but Then I ask again what does her being conservative have anything to do with them coming to my sister's wedding. He says it's because his mother may feel like things are getting serious if both are family meet. This hurts because I've been nothing but nice and have always shown to be a great person to his family. His mother mentions how nice of a girl I am to get friends and family ( well from what my bf tells me).
     So I don't get it. I feel a mixture of emotions. I don't know what to say it how to react or if I should even do anything to begin with. I feel like I should text or call his mom myself so I should ask her personally, but I'm just not sure.
         

Context: mind you he never approached his mother about it . Be just told me about it on the spot.
<bot>: boyfriend mother won't come to my sister's wedding because she's to conservative and may think things are getting serious between my boyfriend and I.