As an adult, it can be awkward to be the focus of attention as everyone sings ‘Happy Birthday’; after everyone finishes singing,

what are you expected to do for the next 30 seconds? In what spot should you rest your palms? Is it all right if you join in?

Rhett Flener, age 3, is completely at ease. On January 1, the sweet little boy turned 3, and his parents posted a video of the celebration online that will make anyone’s heart melt.

Rhett underwent reconstructive bowel surgery within his first few months of life in addition to being born with Trisomy 21 (Down Syndrome).

Since then, several infections, including pneumonia, have kept the infant in and out of the hospital.

But the happiness in his eyes is so contagious that you’d never know he’s had so many health problems!

In the video his parents provided, Rhett seemed delighted with his birthday cake, particularly the ‘3’ candle.

A broad smile then appears on his face as his parents start to sing, followed by what can only be described as joyous laughter.

After the song is through, Rhett’s parents bring the cake closer to him and instruct him to blow out

the candle. With a little assistance from Dad, he eventually blows it out after giving it his all.

Given Rhett’s passion for the candle, you would assume the young child would cry out when the flame was extinguished.

Not with this kid, though. He was even more thrilled and raised his hands in the air in celebration of his success.

His mother summed it up best in the caption of the video: ‘My heart just can’t handle it!!!!!!!He is so amused!