legally my husband has to pay 1/2 of the college education. His son took an internship the summer of his senior year and stayed at the dorm for the summer. Is he legally responsible to pay for this dorm room while his son was doing an internship? Also, his son did not complete college in the 4 year time frame and had to go an extra semester, is he still responsible to pay this extra semester. His son turned 23 in October (if that matters in the decision).