The 25-year-old star recently revealed his fiancee Lisa Stelly is pregnant and the couple are thrilled at the prospect of becoming parents, despite the news coming as a surprise. He told Britain`s Star magazine: "I`m excited. It`s a very good thing. It wasn`t planned, if that tells you anything... "I`m just really happy about the whole thing. It`s going to be a new chapter in my life and I`m excited about it." The `Adrenalin Junkie` host is known for his love of extreme sports but he knows he will have to curb his wild lifestyle when he is a father. He said: "I can`t be selfish. Ultimately your priorities do shift." Jack shot to fame in reality TV show `The Osbournes` over 10 years ago alongside his parents Ozzy and Sharon and sister Kelly but is unsure whether he would want to do a programme about his own household. He said: "It would have to be the right type of project. It wouldn`t just be a Kardashian-type thing like `The Osbournes` once was. I don`t know if the concept would be as loose as that."