Falling out of love?

So I've been dating my boyfriend for about a year now, and up until recently we were always the perfect match. Loving, having fun, didnt fight much. Recently though it feels like we're just in a rut, but its lasting longer than usual. I feel like we domt have the same love for each other anymore, and it's so hard to talk about because when I try to bring up our problems all he says is "itll be ok" , but doesnt really address it, like he avoids it. How do i know when enough is enough? I love him, but I'm not having fun anymore.