while my boyfriend and i were dating - we found a motorcycle and bought it. i paid the full amount (9,800 in cash). he did not contribute one penny. there is a written bill of sale and but he had the guy we bought from put the buyers names as me and him. i have the title and it has only my name. boyfriend and i have now broken up. he claims the bike is 1/2 his, although he didn't pay a penny towards it. i bought it and i paid for it in cash...and title is in my name. am i indeed full owner or does he have a right just because his name is on the bill of sale? please inform.