--now--ever since then (about 3 weeks) we have talked on the phone. When i ask what she's been doing, and if she was at his house(if she really was, not if i ask if she was), she'll say "I was at (big obvious hesitation) a friend's house." Is that good?
Yes. What we're seeing here is a significant other role reversal. She's interested in you in some way, so she doesn't want you to "find out" about the time she's spending with the boyfriend.
She's practically begging to be stolen.
at first she covered up the calls for me. when her boyfriend found out, he tried to take my number with him so she couldn't call and he planned to call me and tell me to stop calling. She told me this and i laughed for a pretty long time. she talked him out of it. her friends make fun of him and say he cries alot.
You'll go far. When the boyfriend is freaking out, you're playing it cool and laughing. The boyfriend is looking like an immature creep, and you're coming across as manly and in control, laughing it off.