Actually no. She was intrigued at first because he resembled Zack, but she was more interested in the real Cloud, hence the 'I want to meet you' line on the date.

Then of course, the novella came out and proved that Aerith was never that hot with Zack because she outright declined his flirtations, but...asjdfkljsadf

But agreed...Tifa is not exactly an obstacle for Cloud/Aerith. Frankly, I just wish the compilation would end already--how about some spotlight on the other parts of the franchise? Or better yet, put all the effort towards the newer games. -_-