Leighton Meester falls in love ''all the time''.

The 'That's My Boy' actress - who is in a relationship with artist Aaron Himelstein - is a romantic person and finds love an ''intriguing'' emotion because it can take so many forms.

She said: ''I love love. It's the most intriguing universally understood emotion, and it comes in so many forms; family love, love of friends. I fall in love with everybody all the time.''

While Leighton never used to want to marry or have children, she says she has now changed her mind because ''I know now you don't have to be married to have children.''

However, she admits if she ever does marry, she would want to have an intimate Celebration.

She told the July issue of Lucky magazine: ''When I was a kid I thought marriage was sex, but if I ever am in a situation where I want to be married, I don't think I'll have a big wedding.

''Hopefully it would be about something way more secure than that.''

The 26-year-old beauty also insisted she doesn't look to her career achievements to feel successful, as she thinks she is doing well if she feels ''happy and fulfilled''.

She said: ''You can't count on success in this business. And anyway, being famous or rich or making a certain kind of movie - none of that means 'success' to me.

''Success to me is being happy and fulfilled, truly fulfilled, and being proud of myself and doing different things all the time. So thus far, yes, I've been successful.''