Can cannabis make you feel for something you wouldn't usually?

My boyfriend and I had split up last week, but we were going to stay friends. Last night he tried a bit of weed, not much, him and a friend shared a spliff, but it got to a point where my boyfriend couldn't take anymore. It made him feel really depressed, but also made him realize things that he wanted to do, for example, he was interested in his writing course again which we was not interested in for a while this year, when I went round to his house last night, they were not stoned anymore but I think if there is any after feeling after the stoned stage that was it, my boyfriend was just very tired, but we got back together also, he realized that he missed me etc, but he said he had been feeling this way for a while, but maybe some of the feelings were a bit amplified and that's why he told me how he was feeling. Should I trust what he said?