My crush has long term girlfriend. He sensed I love him. He showed keen interest in me consistently but I stepped back about a week ago when he told me that he is going to marry his girlfriend. Ever since, he’s given up afternoon coffee which we used to go together to have (I don’t ask him anymore if he wants to go get coffee) and also stopped watering the plants we together bought for his work desk. Why would he act like this? what should I do?