How can i make my relationship a boost in love and happiness?

Me and my boyfriend have been together for a year and 9 mos. I love him to death, and he means the world to me. I want to know what can i do to make things happier? Things are going good, I'm not complaining but i want this to last, i want him to always realize how much he loves me and just for us to be madly in love again. I know how guys can get freaked out with the word "marriage" being brought up but, i honestly want to marry him. Hes just awesome! But he has his times where he gets me mad, like he tries to get me jealous on purpose and it works at times. I want him to miss me all the time like he used to. I know hes not cheating on me, i trust him. But ive been dishonest before so he doesn't trust me completely (i never cheated on him.) How can i get his trust, and his outrageous unconditional love back? Any suggestions would be well appreciated! Thanks =].