I don’t feel loved or valued anymore

My boyfriend and I have been together for 2 years. We were so happy. We were so into each other and wanted to spend all our time together. He would do sweet little acts of love all the time for me and make me feel valued. He no longer does anything of the sort anymore. We talk on the phone maybe once a day, but that’s all he does. I try to ask if I can come see him, but all he says is, “I have plans already” and then when I call him he says, “I have someone else on hold. I have friends I talk to you know?!” I do so much for this boy, but I no longer feel the love or feel valued. Anytime I try and talk to him about how I don’t feel valued he gets mad at me and tells me I’m ungrateful. Idk what to do.