Did sex just ruin my relationship?

So my boyfriend and have been together for about two years now and we have just recently gave our virginity to each other. He has always been very touchy-feely and romantic before we started having sex and I thought it was adorable but he never put his hands down there. But now when he gets home from work we will have our time together and I'll cook him dinner and we'll cuddle and most days we have sex, like really good sex, but the romance is gone! I love him with all of my heart and I'm glad he has my virginity, but what made me FALL in love with him is almost gone. I really want to marry him one day but I feel like I am the only one making the romantic gestures...

I try and keep in mind he did just get promoted for his job and we have wanted this for a long time so we have more money to start a family soon, but the last thing I want is to bring a baby into a relationship that I want to last but I don't know will. Again I really love him and I know he loves me but I want that spark again. Maybe he thinks that since we are having sex he is off the hook romantically? Maybe he wants to, be but his job and the thought of a family is overwhelming him lately? Idk😞