What goes up, must come BACK down

As the post title says " What goes up, must come BACK down ". In general my day should have been a bit better than a typical school day which consists of a routine following : waking up, brunch, comp/anime all in all while talking to my gf if she was online, she is in day school haha , the better side of education per say . Although today i did receive my report card with some miraculous news.. i passed nearly all my classes, sure they were a bit low and i failed one class this marking period but hey its improvement, like a major improvement from the previous years that I've attended this school so I guess you can say i was pretty satisfied with the grades knowing that it can only get better from here. Far from being the least bit of satisfied, my girlfriend was pretty damn disappointed at my report card actually, I guess when your with someone who's used to 90s and such that there would be disappointment instead of any sort of satisfactory comments. Basically my "better than usual" mood was shot down easily. man.. at least i gave two shits about school this time and tried harder knowing she'd like it this way.
What happens when you try your best but your best just doesn't seem good enough ?
What happens when you find out that giving your 150% of your heart and effort only gets you so far?
What happens when the person you love can hardly trust you ? Seemingly another obstacle or rather another gut punch that I'll have to endure. Pretty much when this kinda stuff happens, you feel like even when you say " I love you" your partner doesn't seem to trust those words coming out your mouth. Of course sure i knew I'd have to take a hit or two but wow, my mind seemed to have blanked out and the blood flowing through me seemed to have froze when I found out how little trust she has in me.

Unconditional love is patient and kind.

It is not self-seeking. It does not keep a record of wrongs.
Every human relationship will suffer hurt. Thus, we all need to become better forgivers and confessors. That ability to reconcile and spirit of humbleness will prove the depth of your love and commitment.
Unconditional love develops trust because as you express this kind of love towards someone -- generally he or she will sense your acceptance and feel comfortable.

Maybe I'm not getting it right now and what if its only been a few months, what you feel is what you feel. So then why does it seem like my unconditional love isn't reaching out to her.. ?
Trying my best just doesn't seem to be enough. Which i believe that i must keep trying.
BOY i sound emo and crap but i guess i just needed to express :( haha