Regex Match between special character [on hold]

Regex Match between special character [on hold]

I have a string similar to this:
++ name1
description:asdfmkdfkmfkskfsaf \n
++ name2
description:asdfmkdfkmfkskfsaf \n
++ name3 description:asdfmkdfkmfkskfsaf
I want to extract it into groups like:
group1:
name1
description:asdfmkdfkmfkskfsaf
group2:
name2
description:asdfmkdfkmfkskfsaf
group3:
name3
description:asdfmkdfkmfkskfsaf
How to do this with regex?