It is possible that a man can be so changed by love, that one could not recognize him to be the same person.

Love genuinely rebuilds people, and not always in the direction anyone would want. It can bring out patience and courage that nobody suspected, and it can quietly remove someone from their friends, their interests and their own opinions until very little of the original is still running. Both of these look the same from inside, which is what makes it worth watching.

The question is what is being changed. Growth adds things: new capacities, new steadiness, a wider life. Shrinking takes them away. Ask which is happening for you at the moment, and if you cannot tell, ask the friend who has known you longest and listen to the answer.