Yes. From natural love the angel loves God more than himself because since God is the universal good, and under this good both man and angel and all creatures are comprised (because every creature in regard to its entire being naturally belongs to God), it follows that from natural love angel and man alike love God before themselves and with a greater love.
Otherwise, if either of them loved self more than God, it would follow that natural love would be perverse, and that it would not be perfected but destroyed by charity.