Is it okay if my boyfriend doesn't say I love you back?

Am I overthinking? Is it a big deal or not really? He didn't say "I love you too" yesterday night or in the morning. He has difficulty expressing other emotions because his whole life he has always suppress them so i understand. But he never had trouble saying I love you first or I love you back these past few days. He also never makes me feel unloved because he knows how to make me feel loved. But I can't help but think about this question..
Is it okay if my boyfriend doesn't say I love you back?
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