Change your surroundings and hang out with people you love and fun. Surround yourself with people with your interests. Keep yourself busy with your partner by sharing hobbies or interests, do some activities together. Go hiking, biking, fishing or any other activities you like.
Talk with your partner about your feelings and why you feel lonely, maybe your partner doesn’t know how you feel and he/she may have ideas on how to change your mood and the way you feel.
Keep yourself busy all the time so you don’t feel that way often