Nothing in the Bible says that Delilah loved Samson. The Bible simply says:
Jdg 16:4 After this he loved a woman, who dwelt in the valley of Sorec, and she was called Dalila.
Jdg 16:5 And the princes of the Philistines came to her, and sald: Deceive him, and learn of him wherein his great strength lieth, and how we may be able to overcome him, to bind and afflict him: which if thou shalt do, we will give thee every one of us eleven hundred pieces of silver.
If she was paid to set him up, she may have been a harlot, only he was not the customer who was paying; the princes were paying her. We cannot know for sure, because the Bible does not say. The Haydock Commentary is an orthodox Catholic commentary, though.