In my experience, it's normal to have times of more and less excitement in Ltrs. Staying "in love" often means conscously working toward staying connected with your partner. Think of the people you know who have been together for 25+ years. Do they swoon when the other walks into the room? Do they delight in calling you to tell you what their partner said yesterday? Does your grandma seem to have butterflies in her stomach when your grandpa walks in? Not usually. This is natural. These relationships last because these people enjoy one another's company and love one another even if the excitement has dimmed.
You can work to reconnect with your boyfriend if you wish. Make an effort to share things you have been thinking and feeling. Plan something fun together, even if you can't carry out the plans for awhile. Share your dreams and desires. When you feel bored, take the initiative to start a comversation that interests you. Ask him questions other than some variant of, "how was your day?/how are you?"
I can't speak to whether or not you want to be in an Ldr. Perhaps you don't, but your decision on this may not need to be based on boredom vs excitement.
With the limited information I have, I would suggest working to reconnect with him. You love him. He's supportive of your new relationship. Has he really ceased to enrich your life? There's no need to leave that relationship because a new one seems more enjoyable right now.