Susan Sarandon says her sexual orientation is ''up for grabs''.

The 70-year-old actress - who was previously married to Chris Sarandon and had long-term relationships with Franco Amurri and Tim Robbins - admitted that she is open to dating both men and women.

She told ''I'm open. My sexual orientation is up for grabs, I guess you could say.''

However, Susan claims she is not getting many offers from either men or women these days.

She said: ''Well, I'm a serial monogamist, so I haven't really had a large dating career. I married Chris Sarandon when I was 20, and that went on for quite a while - each of my relationships have. I haven't exactly been in the midst of a lot of offers of any kind. I'm still not! I don't know what's going on! But I think back in the '60s it just was much more open.''

The actress - who has been a firm supporter of LGBT rights for decades - also revealed that she once had a passionate fling with her 'The Hunger' co-star Philip Sayer, who was gay.

She said: ''I did at one point have a very successful and very loving and wonderful affair with a man who then wasn't with another woman after me, and that worked out fine! I don't think you had to declare yourself as rigidly as you do now in terms of having to declare yourself almost politically about your sexual preference.

''Philip Sayer, he was a wonderful actor. He passed away, but yes, he was gay, and we had a great relationship in every way.''

And Susan explained that she has always had an affinity with ''outsiders'' as she feels like one herself.

She explained: ''I feel like an outsider myself. My people, my family for all these years have always been my allies and have always been very, very important to me, very dear to me through the AIDS crisis and everything. It's just a natural, very easy extended family for me.''