I think this is about this guy's ex-girlfriend. About her having a "selective memory", meaning he thinks she's gonna forget about him. I think the opportunities are missed chances to make her stay with him, or to make her fall in love with him. "I’m tired of all the things I should have done instead of staying home." is about the things that they should have done together, to keep the relationship going. Well, that's my opinion, but please don't flame me for it. ^_^
I think this is about this guy's ex-girlfriend. About her having a "selective memory", meaning he thinks she's gonna forget about him. I think the opportunities are missed chances to make her stay with him, or to make her fall in love with him. "I’m tired of all the things I should have done instead of staying home." is about the things that they should have done together, to keep the relationship going. Well, that's my opinion, but please don't flame me for it. ^_^