im in love with a married man

im so glad i found this site, i was realy stressing and heading for major depression,im a psychology student and doing my final year . im in love with a married man, we have been together for 5 months now and he promised to leave his wife for me,but they have a daughter who is 4yrs old.he says he want to take things slowly becuz he doesnt wanna loose his house,car and the rest.so i said to him that i give him 4yrs to fix up all his problems, i really love him so much and i think the is no one else in this world i will be with ,i am scared that what if he is using me to overcum his stress from work and at home?, i doubt if he really loves me, when i bringup this question to him he says he loves me and doesnt wana lose me. please help me i dont know what to think anymore.i think im loosing it