Why does he contradict himself...

The guy I like who I am really close we had an argument one day about how I don't pay attention to him when he's trying to tell me something important. So after a big fight abotu this one day we sat down and talked about it. He really was hurt by the situation and poured out his feelings and he said "I'm like a big brother you know, I'm trying to tell you something important. I'm trying to share stuff with you and you just roll your eyes adn gave me attitude." etc.

So does that mean he sees me as a sister? If so, then why does he say a lot of innuendos only me and he's really flirty and affectionate (in a sexual and/or relationship) sort of way.