Understand before reading this

Cheating is not the issue at all . When I met my boyfriend my fiance had passed away suddenly 1.5 years prior . So hes had a lot to overcome and has done so with flying colors . But this last year of our relationship has been trying were both out of school establishing careers and trying to stay afloat and have been arguing over me feeling we have a sec issue he thinks we don't and it's to the point where he said he was going to leave the other day and didn't and came home and brought all my favorites foods and really catered to me but still no sex and I was sad this morning it's stil not happening and he text me and said when u r done working lite candles and when I get home I'm. fucking u I honestly just don't know what to do . Like he thinks this one time is going to make stuff better and I'm just consumes ed do I go with it and be happy and give him.a chance or no