i feel bad in may marriage

My • i am 27, happy married i have a 4 year old son. from mission hills california, 91345. hit me up.
we've been 4 years as a family we do have a one son. but i do have a daughter in my first x bf that he accepted. but my daughter was living togethere with his family in their country. im tired and hopeless i feel abused because if he wanted sex i give it to him and we do it everyday to the extent that i dont like and enjoy it anymore i make excuses. we fight everydAy and he sleep in the sofa while me and my son in the room. i dont feel his love anymore i felt betrayed and being cheated. we doesnt talk about the future anymore he doenst even talk his life or how is he doing now. like we are doing this because we have a son and its obligation. :( he always tells me that without him we are nothing. he gets jealos of everyone even his friends. i dont know what to do anymore. i feel sad. 😭 maybe he is cheating on me but i dont know. i dont know how he does it because he doesnt have A mobile  phone or maybe he is flirting with somebody? or he doesnt love me anymore. pls help me and advice me. thank you.