There are 2 sentences here, and the punctuation is not properly shown. There should be a comma after "gloomy" so that the sentence continues to convey (show) a complete thought. It is an example of logically incoherent writing for dialogue, because the first sentence does not agree with the last sentence. Each sentence alludes to (shows) other information which cannot be completely known from the individual sentences. Even together, the sentences are not coherent, which is to say, they show a confused presentation of information. Individually, they could be understood as follows: (a) "From the time you came scruffing into my life, so gloomy, I knew what I was letting myself in for. MEANING: the subject person, "scruffling" became involved in an odd way. The odd way is not specified. The person could be unemployed, a "moocher" depending upon others for money and things. In addition, the subject person is "gloomy" which is to say, emotionally needy. We can see how this is not at all logically consistent with the second sentence as follows. (b) "You're my rock." MEANING: You are the single source of great strength and inspiration in my life. Why is it logically incoherent (confusing) in regard to the first sentence? "Gloomy" people are not anyone's source of Strength. The require the strength of others and are typically emotionally needy, using other people as the source for their own strength. ------------------------------ These sentences are an example of very confused writing and thinking. It is not surprising that they are found in a movie. Many movies contain confused and contradictory dialogue, and the script writers created confused characters, because they are confused in their own thinking. .

By the way, I searched the Internet for this movie Title, and found nothing.