Teen Mom Jenelle Evans announces engagement to boyfriend Gary Head 05/18/2012 Jenelle Evans is officially engaged to her on-again, off-again boyfriend Gary Head. Read More RELATED NEWS 'Teen Mom 2' alum Kailyn Lowry introduces her newborn twins'Teen Mom 2' alum Chelsea Houska lands HGTV series with husband Cole DeBoer'Teen Mom 2' star Briana DeJesus engaged to boyfriend Javi Gonzalez TAGS: Teen Mom Jenelle Evans