If your guy friend is always available, he's def bailing on other plans just so he can reply "nm what are you up to" when you ask him what he's doing.
It's also safe to assume that he's lied and said he's hungry even though he just ate dinner.
It can be hard to know (without asking outright, of course). How long it takes him to make contact will depend on his personality but, if he’s not playing games, it won’t take more than one or two days. If he’s placing a hand on the small of your back to guide you through a crowd, or brushing his arm against yours at dinner, it’s a good bet that he likes you.If you actually listened to his advice, you'd realize that the intelligent, honest, big-dicked man of your dreams is right in front of you.Unfortunately for him, you never will because why would anyone ever take their guy friend's advice about dating?When some rando girl eventually does pop into his life, it'll take about two days for her to realize who the real woman in his life is and commence hating you with a firey passion.She'll spend the entire relationship being fake AF to your face and demanding to know why you're his best friend on Snapchat behind closed doors.