The "Share" option for Youtube is no longer on my phone.?

I have a T-Mobile Mytouch 3G Slide. I am on my 4th one through insurance. This one I just got yesterday. I was able to share videos through Youtube before. Both in text messages and by copying the link at the top of the page. Then I could paste it wherever. With this "new" one, "Share" is not even an option. I went into the T-Mobile store and the guy was pretty baffled, but thought maybe I just needed to download Youtube from Android. I did, still no dice. So, he looked on his phone...which was some other T-Mobile phone...and he didn't have a "Share" option either. I just used this feature on the other phone a few days ago. I'm logged in with my Youtube account and everything...so I'm really lost as to why the option is totally gone. Is anybody else having this issue, noticed anything like this recently or knows if Youtube took this feature away? I can't understand why they would....but maybe? I have no idea. Please help!!!