At the moment it is believed to be Baelyn Neff, according to whosdatingwho.com
There are rumors also going around that he is married, but whether or not it is Baelyn Neff, no one really knows. If so, then edit this answer!
Asked in Afro & Dreadlocks
How long did Brandon Boyd have his dreadlocks for and how did he do them?
he had them for 4 years and he backcombed his extremely long hair