How can you tell if your bf is no longer interested in you?

Maria

Since yesterday, he won't respond to my ILYs at first I just brushed it off. When Intried to asked him if everything is fine he said yeah and when I opened up to him he said, "I called you the other day and said it to you." I just apologized but idk, my paranoid add is telling me there's something wrong. 😕