Jessica Biel knew she would marry Justin Timberlake after ''a little bit'' of dating.

The 35-year-old actress has two-year-old son Silas with the 'Can't Stop The Feeling' musician - whom she has been married to for five years - and whilst she can't recall a ''tangible moment'' in which she knew Justin was the man of her dreams, she admits it didn't take long for her to see a future with him.

She said: ''We had been dating for a little bit ... There was just a moment when I called a girlfriend and I said, 'I'm going to marry this guy.' I don't necessarily know why, but I think a lot of people feel that way. It's not a tangible moment where you're like, 'This is it'. It just is, somehow.''

The pair are still going strong, and Jessica can't wait to see her spouse take to the stage at the Super Bowl half-time show in February next year.

Speaking about the 36-year-old singer's performance, she said: ''It's going to be good. I guess I could be a little bit biased, but I think he puts on the best show of anybody. I'm just excited for him to have a really incredible place to perform and play some great stuff.''

Although their relationship might be going from strength to strength, their son Silas is in the middle of his ''terrible twos'', and Jessica admits his tantrums can be ''tough''.

She said: ''There's a lot of 'No' going on in my house ... It can be tough.''

But the 'Total Recall' actress believes her LA restaurant Au Fudge - which is opening an arts and music centre for children in November - is the perfect place for Silas and other children to ''go crazy for a while''.

She told 'Entertainment Tonight': ''We [need more] wine, friends, more places like this, where you can just sit back and let them go crazy, because they just need to go crazy for a while.''