I want to marry my boyfriend.

I'm so In love with my boyfriend we have almost been together 3 years now I'm 22 he's 26 we Been ttc for about 2 years. I want him to ask me to marry him and I just don't feel like it's coming anytime soon. He always brings up conversation about places he would love to marry me but he's not asked me. I don't want to mention this to him because it will be forced I want him to want to marry me 😔 ahh I hope the day comes 😊