(Cover) - EN Showbiz - Ashton Kutcher has admitted he was a bit of a fumbler when he was at high school.

The 33-year-old American actor rose to fame in the late 90s as one of the stars of hit sitcom That '70s Show, earning himself an army of adoring fans across the globe.

Ashton is now one of Hollywoods most bankable leading men, and is currently promoting his latest movie No Strings Attached, in which he plays Adam, an aspiring TV writer who begins a casual fling with a beautiful doctor named Emma portrayed by Natalie Portman.

The hunk has been happily married to stunning movie actress Demi Moore, 48, since 2005, although he admits his love life hasnt always been so breezy. As a teen, the handsome star admits he didnt have much success with the ladies much like his character Adam in No Strings Attached.

I was a bit of a fumbler. I didnt really have, like, a girlfriend until I was a senior in high school so really I was very nervous about the whole thing and I didnt manage very well, he confessed to Cover Media.

Ashton found the love story in No Strings Attached adorable, and appreciated the realistic development of Adam and Emmas relationship. He thinks people need to understand successful unions require hard work and dedication, and believes one of the most fundamental elements of a strong relationship is treating your partner as an equal.

Im just trying to make mine work, he laughed, when asked if he could offer any relationship advice.

I think great relationships are great partnerships - those come in all shapes, sizes, forms, ages and whatever it is. (C) Cover Media