Female gemini wood tiger just asked out by male aquarius wood tiger. Sister pushed on accepting date

Positives: the guy is nice, very polite, friendly, well educated and fairly good looking.
Negatives: very different cultures (I know his well, and yes, it could be a problem in the long term), some other small issues and... I actually like someone else who doesn't want to be with me.
I am turning 40 this year and I know, running out of time. He has asked me out for his day off, so I went with my sister, who insisted on going on the date, and another gf. When we were left alone, he said that he really liked me (hardly knows me - has only seen me a few times at his workplace!) and that "by looking in my eyes he knows it's right" so that he "wants to have a relationship with me".
Your thoughts? According to the above predictions, this could be it! Thanks in advance for all feedback.