Okay, it can't be more obvious than that. A guy that tells you "I like you" probably isn't lying. The next question is, in what way does he "like you" – he wants to hook up and be together, or just have sex, or he just likes you in a "I feel sorry for you" way, and he thinks you're cool, but he'd never be with you.
Try to tune into the tone of his voice when he says this, you'll know which type of "I like you" it was immediately, just look at him! Either way, it doesn't get more obvious than this!
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