First time he told me he loved me during sex...

So I've been with my man for over a year and he has never, ever told me he loves me while having sex with me. It has kind of been a bummer in the back of my mind. He says I love you many times when we aren't having sex throughout the day tho. But today we were having sex and I orgasmed hardcore and I burst out "I love you" after I orgasmed. And he was just silent for what seemed like forever and then said I love you too. Idk. I just think it's weird he has never said it and then when I said it it he hesitated to say it back. I KNOW he loves me but damn why is this like an issue for him 😞