Me and my boyfriend have been together for 4 years going on 5 this year. We are in a long distance relationship. Lately I've been getting immensely sad whenever he has to go or spend less time with me on the phone. I am so happy when we spend the whole day together but still get sad when the day is coming to an end. It's even worst when I barely get the day with him and he already has to leave. I get really jealous when he'd rather play with his friends than talk to me. I get really sad and even cry sometimes begging him not to go. I get frustrated whenever he tells me there's no reason I should cry because it makes me feel like he doesn't understand how much I love him. I know this is unhealthy for me to be acting this way. Is there anything I can do?