It's a mistake or a kind of abbreviation?

[DreamFounder]

Recently,I often meet a word "‘cause".At first I make it as a kind of mistake but I have met it twice so I don't know if it is a kind of abbreviation.Show me your idea.Thank U.
the sentences
1.Is that bad ‘cause I’m married?
2.Well, I mean, OK, ‘cause, I mean, as someone who’s married and in a long-term relationship...

[Anglika]

It is an abbreviation of "because" - used in spoken English or written dialogue, but not acceptable otherwise.

[Casiopea]

Variations: coz, cos

[DreamFounder]

Yeah,it's very interesting.Thank U very much.