If you mention about LOVE, it's an interesting topic. How to keep this relationship
- Firstly, You have to give repect to the other. How to be repected: do not beat him/her, do not look down upon him/her,..
- Secondly, help him/her with the best thing you can
- Thirdly, give him/her the gifts, especially the gift you make by yourself or give him/her in a normal day (very surprised)
- Forthly, be strong. show him/her about your ability, what you can do, and what you can do for her/him to make him/her feel safe and be protected
- Fifthly, change yourself in an active way, better than yesterday
...
Hope you can do some like I say. Do not need to try to complete all as nobody is perfect 100%