Kevin Costner and Christine Baumgartner reunited below one roof — however don’t get it twisted, they stored their distance. The explanation? Their son’s commencement, not a reconciliation.

Peep the pics — the exes hit pause on the drama for his or her 18-year-old son Cayden’s massive highschool commencement in Santa Barbara … however they made rattling positive to maintain their distance.

Kevin and Christine every gave Cayden his second — simply from reverse ends of the varsity grounds. The teenager stored issues Switzerland, snapping pics with each proud mother and father.

Yeah, the strain’s nonetheless there — no mistaking that … particularly with Christine nonetheless cashing these Costner checks. Bear in mind, Kev handed over a $1 mil lump sum per their prenup and remains to be dropping $63K a month for the youngsters.