Sometimes you need to remove the emotion and look at the situation from others perspectives. Would someone who even cared for , never mind had only friendship intentions, only want your company when they need something? What if you were in distress or hurt? She wouldn’t be there for you buddy, she’s proven that right? Now if you won the Lottery, her pants would be at her knees and she’d be answering her door in a fucking heartbeat. Unrequited feelings suck and hurt but they are also taken advantage of. You deserve better than she will give unless there is something in it for you.