United Kingdom, Feb. 6 -- Brian Austin Green's five children were "all unplanned", according to his partner Sharna Burgess.

The Beverly Hills, 90210 actor is dad to Kassius, 23, with his ex-girlfriend Vanessa Marcil as well as Journey, nine, Bodhi, 11, and Noah, 12, with Megan Fox and Zane, three, with Burgess, who joked her fiance has never had the "experience" of planning a pregnancy because his his "swimmers are very, very strong".

During an appearance on the Between Us Moms podcast, Burgess explained they have "control" if they want to expand the family again after the actor underwent a vasectomy. She said: "[Brian] did that amazing thing of having a vasectomy, knowing we can reverse, do IVF (in vitro fertilization), all the things....