Ryan Seacrest single and having fun with the mingle

Ryan Seacrest is single and ready to mingle.

The "American Idol" host was spied partying alongside a mystery blonde at sbe's XIV Summer Sessions in Los Angeles on Sunday.

According to a witness, his March breakup from longtime girlfriend Julianne Hough "appeared to be the last thing on his mind" as he was overheard telling his boys that he's "single and loving it."

The 38-year-old spent the majority of the day with the mystery blonde, drinking Grey Goose cocktails and even jumping into the DJ booth at one point.