Will she find me more romantic after this plan?

Last time I saw my girlfriend, it was for a short time and we were both really exhausted. It wasn't the greatest day ever, just because we were not really in fantastic moods, but I feel like I can use this to my advantage. Since we both were so tired and I was a bit awkward, I was thinking that if I am super romantic tomorrow when she comes over, she will be so shocked she might just wanna "hmmhmmhmm" (just fill in for that). So do you think that if the next date together is like crazy romantic and good, this sudden change will work in my benefit or work against me?