5people mer up for dinner and each one hugged all the others once. how many hugs took place

Imagine that the 5 people form a straight line. The person on the right begins the hugging routine. 

He hugs 4 other people. He then goes to the main table and sits down. 

The person who is now the new right most person hugs the other 3. then he goes and sits down

The person who is the new right most person hugs the other 2. Then he goes and sits down.

The two remaining pair exchange 1 hug and then they sit down.

The total is 4 + 3 + 2 + 1 = 10. 

Question
Is there any other way to do this? Yes. But that is another question.