my DS was like that for no particular reason that i could tell until he was about 18 months old. i always found it a bit crowded in bed with the 3 of us so DS slept on a king single mattress on the floor from about 9 months old & i would sleep with him. it made him really easy to put down after a feed (or i'd feed lying down from about 7 months i think) & be able to get away or just go back to sleep depending on what time it was.

when he was really bad, there were quite a few nights where i would just feed him & let him sleep on me while we watched a dvd/tv with the lights off. not ideal but it certainly didn't create a habit that we couldn't break & i promise that he does now sleep in his own bed & pretty much sleeps through most nights. sometimes you need the downtime & 'me' time & that worked for us as a compromise.

i hope tonight is a better one for you