Is three months too early to say I love you?

My boyfriend told me last night 'Im in love with you" but not "i love you". I think he said that he didn't mean he loves me but he's in love with me, what could that mean? I said Im in love with him back and the people i've told said it's too early. Is it? We're best friends, see each other every second, and I've sure felt it for a while now. Is 3 months too early?
Is three months too early to say I love you?
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