I've always wondered what my angel would look like if I could see him, I've made a couple of drawings. I don't believe he looks like what I imagine.
Some saints saw their angels, like St. Catherine Laboure, St. Angela Meici, St. Gemma, St. Pio; I suppose many saints were able to see them.
I've never seen him but I have experienced his protection.
I think angels are quite detached - or free from attachment. They love us of course, but it is a pure and chaste love - a supernatural love. To think we are loved by such a being. Loved and protected and directed and guided - without any attempt to control or interfere with our freedom. That is a love I never want to be separated from.
“My guardian angel, you always behold the Holy Trinity. You are deeply loved by the divine Majesty. You know how desperately I need the grace of God to know what He wants me to do and the strength I need to surrender my stubborn will to His divine will. How I need your powerful intercession with the Almighty. I trust you will hear my prayer and I am confident that with your help I will live my life as a sacrifice of myself to God and thus merit to join you in that celestial glory where you are waiting for me. Amen.” - Fr. Hardon Archives