I don't feel special to my bf

Kirsten • I`m 18 and in love with my boyfriend of 3 years just using this app to monitor my period and learn more about my body
How do I get my boyfriend to say more loving things to me?  I really feel like I need words of encouragement and I want to feel special and I don't.  When I brought it up to him he just said he was gonna break up with me for saying such a dumb thing (jokingly).  Also I don't know if I'm being needy or if this is a justified need for a relationship.  We've been dating for over two years now and I feel like he just assumes I'm not going anywhere so he doesn't try to flirt or say sweet things to me.