Definition: a former spouse (or boyfriend/girlfriend).
Gloss: WHENEVER IX1 SEE EX-BOYFRIEND/\, IX1 WALK CL:2-look-through-CL2.
English equivalent: Whenever he meets his ex-girlfriend, she looks through through him.
Raise eyebrows toward the end of a clause between WHENEVER and EX-BOYFRIEND. It's an example of two clauses using a "when" clause.
The pronoun IX1 and right-handed classifier CL:2 refer to the female (she) and the left-handed classifier handshape refers to the ex-boyfriend. The signer's facial expression refers to the ex-girlfriend who avoids eye contact.