Unsure of his feelings for me? What does that mean really?

I've been dating this guy for 3 months now and have seen him exclusively (he hasn't dated anyone else either) for all this time. I asked him recently where he thought things were and he said that he is 'unsure of his feelings' for me. But generally he's not a person who is aware of his feelings. He still likes spending time with me, we see each other every week and he talks to me a few times a week. Is this bad news? Some of my friends say I should give him a break as it's only been 3 months. Some friends have doubts about him. What do you think? Is it common for guys to take more than 3 months to figure out whether he wants a long term relationship with a woman?

Unsure of his feelings for me? What does that mean really?
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