Unlike other other clerics, you don't worship a god to gain your strength. instead you use the sheer power of love and devotion to others to fuel your spells. While a selfless path to persue, it doesn't come without its costs.

Health Transfer

Not being dependent on a diety for healing sounds nice until you realize that the healing had to come from somewhere. At 1st level, you can use an action to choose one ally in a 15 ft. radius. You can heal them up to the maximum of your current hit points. You then lose that number of hit points.

Encourage

Your words of encouragement embolden your alllies. At 2nd level, you can use a bonus action to choose one ally in a 15ft. That ally now has an additional bonus action until the end of their next turn.

Envigorate

Your love for your allies gives them the drive to push forward. At 2nd level, you can use an action and choose one ally in a 15 ft. radius. That ally now has an additional action until their next turn.

Shared Burdens

You found that sharing in others pain can release them from their worries. At 4th level, you can choose one ally in a 10ft. radius that has a negative status effect. The target will lose all negative status effects and you will gain them.

Fortifying Bond

Your companions feel safe around you when you're vulnerable, and as it turns out, their safety might be more physical than they realize. At 6th level, you can use an action to choose one ally in a 10 ft radius. You can increase their AC to a maximum of +5 until the end of their next turn. You then subtract the number from AC your for the same duration.

All in This Together

You have too much love for just one person to enjoy at a time. At 8th level, the range of all of your previous abilities has increased by 10 ft. The effects of Health Transfer, Shared Burdens, and Fortifying Bond can now be shared by multiple allies. (You hit points and AC will be divided equally by as many as you wish in range, and can take multiple status effects.)

No Greater Love

There is no greater love than this; for a man to lay his life for his friends. At 17th level, you gain access to this ability that costs an action to activate. You channel all of the love for your fallen friends to do one final act of love. When you use this ability, the love you have channeled will be more than your body can take. This will cause your body to be destroyed completely, killing you in the process. There is no way to revive you after this. After your death, every downed or dead ally in a 100 ft radius will have their hit points completely restored, all of their spell slots completely replenished, and a +5 to their AC that will last until the battle is over. (suggestion for DM: make this option known only to the player that can use this for maximum emotional impact.)