Uncomfortable saying "I love you"

My boyfriend and I have been together almost 2 yrs. He isn't an emotional person and to an extent I've learned to accept that. When I tell him I love him he just nods at me. When I asked him about it his answer was "I just don't say it to anyone, even my family. It's who I am and I'm comfortable this way". I don't know if I can spend my life never knowing how he feels, which I've also asked him and he says I should know because he's still here. Is it stupid of me to let this bother me?

Uncomfortable saying "I love you"
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